[themes] MySQL Workbench Dark Theme

I am new here on Stackoverflow and have full of excitement bringing up my first question. My first question is all about changing the color appearance of MySQL Workbench from the default of white background to its negative value of black.

I was planning to pair the theme with my Dark Theme Eclipse Juno. Adjusting my eye contrast to the quick change of color could damage my eyesight.

Furthermore about this question, I am open for suggestion if such change is possible or not.

Thanks.

This question is related to themes mysql-workbench

The answer is


For disabling Dark mode in MySQL workbench on mac: Open terminal use mentioned command:

defaults write com.oracle.workbench.MySQLWorkbench NSRequiresAquaSystemAppearance -bool yes

For Enabling Dark mode in MySQL workbench on mac: Open terminal:

defaults write com.oracle.workbench.MySQLWorkbench NSRequiresAquaSystemAppearance -bool no


FYI Dark theme is now in the Dev Version of MySQL Workbench

Update: From what I can tell it is Natively built into MySQL Workbench 8.0.15 for MAC OS X

The package I downloaded was mysql-workbench-community-8.0.15-macos-x86_64.dmg

https://dev.mysql.com/downloads/workbench/ enter image description here


try to disabled Dark Mode on Mysql Workbench run this on terminal

defaults write com.oracle.workbench.MySQLWorkbench NSRequiresAquaSystemAppearance -bool yes

Quoting Yoga...

For Mac users, the code_editor.xml file is in MBP HD/ Applications/MySQLWorkbench.app/Contents/Resources/data/

I just discovered by dumbfounded experimentation (i.e. first thing I tried, worked) that if I copy that file to...

/Users/your.username/Library/Application Support/MySQL/Workbench/code_editor.xml

...and then edit it there, it does indeed override. Just worked perfectly for me on Mac OS X Sierra and MySQL Workbench 6.3.


Edit: Advise: This answer is old and a better solution can be found in this same page. This answer referred to MySQL Workbench 6.3 and is outdated. If you are using a new version (8.0 as today) look for @VSingh comment in this very page.


Original answer:

Just a copy of Gaston's answer, but with Monokai theme colors.

<!-- 
    dark-gray:         #282828;
    brown-gray:        #49483E;
    gray:              #888888;
    light-gray:        #CCCCCC;
    ghost-white:       #F8F8F0;
    light-ghost-white: #F8F8F2;
    yellow:            #E6DB74;
    blue:              #66D9EF;
    pink:              #F92672;
    purple:            #AE81FF;
    brown:             #75715E;
    orange:            #FD971F;
    light-orange:      #FFD569;
    green:             #A6E22E;
    sea-green:         #529B2F; 
-->
<style id="32" fore-color="#DDDDDD" back-color="#282828" bold="No" />   <!-- STYLE_DEFAULT       !BACKGROUND!   -->
<style id="33" fore-color="#DDDDDD" back-color="#282828" bold="No" />   <!-- STYLE_LINENUMBER                   -->
<style id= "0" fore-color="#DDDDDD" back-color="#282828" bold="No" />   <!-- SCE_MYSQL_DEFAULT                  -->
<style id= "1" fore-color="#999999" back-color="#282828" bold="No" />   <!-- SCE_MYSQL_COMMENT                  -->
<style id= "2" fore-color="#999999" back-color="#282828" bold="No" />   <!-- SCE_MYSQL_COMMENTLINE              -->
<style id= "3" fore-color="#DDDDDD" back-color="#282828" bold="No" />   <!-- SCE_MYSQL_VARIABLE                 -->
<style id= "4" fore-color="#66D9EF" back-color="#282828" bold="No" />   <!-- SCE_MYSQL_SYSTEMVARIABLE           -->
<style id= "5" fore-color="#66D9EF" back-color="#282828" bold="No" />   <!-- SCE_MYSQL_KNOWNSYSTEMVARIABLE      -->
<style id= "6" fore-color="#AE81FF" back-color="#282828" bold="No" />   <!-- SCE_MYSQL_NUMBER                   -->
<style id= "7" fore-color="#F92672" back-color="#282828" bold="No" />   <!-- SCE_MYSQL_MAJORKEYWORD             -->
<style id= "8" fore-color="#F92672" back-color="#282828" bold="No" />   <!-- SCE_MYSQL_KEYWORD                  -->
<style id= "9" fore-color="#9B859D" back-color="#282828" bold="No" />   <!-- SCE_MYSQL_DATABASEOBJECT           -->
<style id="10" fore-color="#DDDDDD" back-color="#282828" bold="No" />   <!-- SCE_MYSQL_PROCEDUREKEYWORD         -->
<style id="11" fore-color="#E6DB74" back-color="#282828" bold="No" />   <!-- SCE_MYSQL_STRING                   -->
<style id="12" fore-color="#E6DB74" back-color="#282828" bold="No" />   <!-- SCE_MYSQL_SQSTRING                 -->
<style id="13" fore-color="#E6DB74" back-color="#282828" bold="No" />   <!-- SCE_MYSQL_DQSTRING                 -->
<style id="14" fore-color="#F92672" back-color="#282828" bold="No" />   <!-- SCE_MYSQL_OPERATOR                 -->
<style id="15" fore-color="#9B859D" back-color="#282828" bold="No" />   <!-- SCE_MYSQL_FUNCTION                 -->
<style id="16" fore-color="#DDDDDD" back-color="#282828" bold="No" />   <!-- SCE_MYSQL_IDENTIFIER               -->
<style id="17" fore-color="#E6DB74" back-color="#282828" bold="No" />   <!-- SCE_MYSQL_QUOTEDIDENTIFIER         -->
<style id="18" fore-color="#529B2F" back-color="#282828" bold="No" />   <!-- SCE_MYSQL_USER1                    -->
<style id="19" fore-color="#529B2F" back-color="#282828" bold="No" />   <!-- SCE_MYSQL_USER2                    -->
<style id="20" fore-color="#529B2F" back-color="#282828" bold="No" />   <!-- SCE_MYSQL_USER3                    -->
<style id="21" fore-color="#66D9EF" back-color="#49483E" bold="No" />   <!-- SCE_MYSQL_HIDDENCOMMAND            -->
<style id="22" fore-color="#909090" back-color="#49483E" bold="No" />   <!-- SCE_MYSQL_PLACEHOLDER              -->
<!-- All styles again in their variant in a hidden command -->
<style id="65" fore-color="#999999" back-color="#49483E" bold="No" />   <!-- SCE_MYSQL_COMMENT                  -->
<style id="66" fore-color="#999999" back-color="#49483E" bold="No" />   <!-- SCE_MYSQL_COMMENTLINE              -->
<style id="67" fore-color="#DDDDDD" back-color="#49483E" bold="No" />   <!-- SCE_MYSQL_VARIABLE                 -->
<style id="68" fore-color="#66D9EF" back-color="#49483E" bold="No" />   <!-- SCE_MYSQL_SYSTEMVARIABLE           -->
<style id="69" fore-color="#66D9EF" back-color="#49483E" bold="No" />   <!-- SCE_MYSQL_KNOWNSYSTEMVARIABLE      -->
<style id="70" fore-color="#AE81FF" back-color="#49483E" bold="No" />   <!-- SCE_MYSQL_NUMBER                   -->
<style id="71" fore-color="#F92672" back-color="#49483E" bold="No" />   <!-- SCE_MYSQL_MAJORKEYWORD             -->
<style id="72" fore-color="#F92672" back-color="#49483E" bold="No" />   <!-- SCE_MYSQL_KEYWORD                  -->
<style id="73" fore-color="#9B859D" back-color="#49483E" bold="No" />   <!-- SCE_MYSQL_DATABASEOBJECT           -->
<style id="74" fore-color="#DDDDDD" back-color="#49483E" bold="No" />   <!-- SCE_MYSQL_PROCEDUREKEYWORD         -->
<style id="75" fore-color="#E6DB74" back-color="#49483E" bold="No" />   <!-- SCE_MYSQL_STRING                   -->
<style id="76" fore-color="#E6DB74" back-color="#49483E" bold="No" />   <!-- SCE_MYSQL_SQSTRING                 -->
<style id="77" fore-color="#E6DB74" back-color="#49483E" bold="No" />   <!-- SCE_MYSQL_DQSTRING                 -->
<style id="78" fore-color="#F92672" back-color="#49483E" bold="No" />   <!-- SCE_MYSQL_OPERATOR                 -->
<style id="79" fore-color="#9B859D" back-color="#49483E" bold="No" />   <!-- SCE_MYSQL_FUNCTION                 -->
<style id="80" fore-color="#DDDDDD" back-color="#49483E" bold="No" />   <!-- SCE_MYSQL_IDENTIFIER               -->
<style id="81" fore-color="#E6DB74" back-color="#49483E" bold="No" />   <!-- SCE_MYSQL_QUOTEDIDENTIFIER         -->
<style id="82" fore-color="#529B2F" back-color="#49483E" bold="No" />   <!-- SCE_MYSQL_USER1                    -->
<style id="83" fore-color="#529B2F" back-color="#49483E" bold="No" />   <!-- SCE_MYSQL_USER2                    -->
<style id="84" fore-color="#529B2F" back-color="#49483E" bold="No" />   <!-- SCE_MYSQL_USER3                    -->
<style id="85" fore-color="#66D9EF" back-color="#888888" bold="No" />   <!-- SCE_MYSQL_HIDDENCOMMAND            -->
<style id="86" fore-color="#AAAAAA" back-color="#888888" bold="No" />   <!-- SCE_MYSQL_PLACEHOLDER              -->

MySQL Workbench 8.0 Update

Based on Gunther's answer, it seems like in code_editor.xml they're planning to enable a dark mode at some point down the road. What was once fore-color has now been split into fore-color-light and fore-color-dark. Likewise with back-color.

Here's how to get a dark editor (not whole application theme) based on the Monokai colours provided graciously by elMestre:

<!-- 
dark-gray:         #282828;
brown-gray:        #49483E;
gray:              #888888;
light-gray:        #CCCCCC;
ghost-white:       #F8F8F0;
light-ghost-white: #F8F8F2;
yellow:            #E6DB74;
blue:              #66D9EF;
pink:              #F92672;
purple:            #AE81FF;
brown:             #75715E;
orange:            #FD971F;
light-orange:      #FFD569;
green:             #A6E22E;
sea-green:         #529B2F; 
-->

<style id="32" fore-color-light="#DDDDDD" back-color-light="#282828" fore-color-dark="#DDDDDD" back-color-dark="#282828" bold="No" />   <!-- STYLE_DEFAULT       !BACKGROUND!   -->
<style id="33" fore-color-light="#DDDDDD" back-color-light="#282828" fore-color-dark="#DDDDDD" back-color-dark="#282828" bold="No" />   <!-- STYLE_LINENUMBER                   -->
<style id= "0" fore-color-light="#DDDDDD" back-color-light="#282828" fore-color-dark="#DDDDDD" back-color-dark="#282828" bold="No" />   <!-- SCE_MYSQL_DEFAULT                  -->

<style id= "1" fore-color-light="#999999" back-color-light="#282828" fore-color-dark="#999999" back-color-dark="#282828" bold="No" />   <!-- SCE_MYSQL_COMMENT                  -->
<style id= "2" fore-color-light="#999999" back-color-light="#282828" fore-color-dark="#999999" back-color-dark="#282828" bold="No" />   <!-- SCE_MYSQL_COMMENTLINE              -->
<style id= "3" fore-color-light="#DDDDDD" back-color-light="#282828" fore-color-dark="#DDDDDD" back-color-dark="#282828" bold="No" />   <!-- SCE_MYSQL_VARIABLE                 -->
<style id= "4" fore-color-light="#66D9EF" back-color-light="#282828" fore-color-dark="#66D9EF" back-color-dark="#282828" bold="No" />   <!-- SCE_MYSQL_SYSTEMVARIABLE           -->
<style id= "5" fore-color-light="#66D9EF" back-color-light="#282828" fore-color-dark="#66D9EF" back-color-dark="#282828" bold="No" />   <!-- SCE_MYSQL_KNOWNSYSTEMVARIABLE      -->
<style id= "6" fore-color-light="#AE81FF" back-color-light="#282828" fore-color-dark="#AE81FF" back-color-dark="#282828" bold="No" />   <!-- SCE_MYSQL_NUMBER                   -->
<style id= "7" fore-color-light="#F92672" back-color-light="#282828" fore-color-dark="#F92672" back-color-dark="#282828" bold="No" />   <!-- SCE_MYSQL_MAJORKEYWORD             -->
<style id= "8" fore-color-light="#F92672" back-color-light="#282828" fore-color-dark="#F92672" back-color-dark="#282828" bold="No" />   <!-- SCE_MYSQL_KEYWORD                  -->
<style id= "9" fore-color-light="#9B859D" back-color-light="#282828" fore-color-dark="#9B859D" back-color-dark="#282828" bold="No" />   <!-- SCE_MYSQL_DATABASEOBJECT           -->
<style id="10" fore-color-light="#DDDDDD" back-color-light="#282828" fore-color-dark="#DDDDDD" back-color-dark="#282828" bold="No" />   <!-- SCE_MYSQL_PROCEDUREKEYWORD         -->
<style id="11" fore-color-light="#E6DB74" back-color-light="#282828" fore-color-dark="#E6DB74" back-color-dark="#282828" bold="No" />   <!-- SCE_MYSQL_STRING                   -->
<style id="12" fore-color-light="#E6DB74" back-color-light="#282828" fore-color-dark="#E6DB74" back-color-dark="#282828" bold="No" />   <!-- SCE_MYSQL_SQSTRING                 -->
<style id="13" fore-color-light="#E6DB74" back-color-light="#282828" fore-color-dark="#E6DB74" back-color-dark="#282828" bold="No" />   <!-- SCE_MYSQL_DQSTRING                 -->
<style id="14" fore-color-light="#F92672" back-color-light="#282828" fore-color-dark="#F92672" back-color-dark="#282828" bold="No" />   <!-- SCE_MYSQL_OPERATOR                 -->
<style id="15" fore-color-light="#9B859D" back-color-light="#282828" fore-color-dark="#9B859D" back-color-dark="#282828" bold="No" />   <!-- SCE_MYSQL_FUNCTION                 -->
<style id="16" fore-color-light="#DDDDDD" back-color-light="#282828" fore-color-dark="#DDDDDD" back-color-dark="#282828" bold="No" />   <!-- SCE_MYSQL_IDENTIFIER               -->
<style id="17" fore-color-light="#E6DB74" back-color-light="#282828" fore-color-dark="#E6DB74" back-color-dark="#282828" bold="No" />   <!-- SCE_MYSQL_QUOTEDIDENTIFIER         -->
<style id="18" fore-color-light="#529B2F" back-color-light="#282828" fore-color-dark="#529B2F" back-color-dark="#282828" bold="No" />   <!-- SCE_MYSQL_USER1                    -->
<style id="19" fore-color-light="#529B2F" back-color-light="#282828" fore-color-dark="#529B2F" back-color-dark="#282828" bold="No" />   <!-- SCE_MYSQL_USER2                    -->
<style id="20" fore-color-light="#529B2F" back-color-light="#282828" fore-color-dark="#529B2F" back-color-dark="#282828" bold="No" />   <!-- SCE_MYSQL_USER3                    -->
<style id="21" fore-color-light="#66D9EF" back-color-light="#49483E" fore-color-dark="#66D9EF" back-color-dark="#49483E" bold="No" />   <!-- SCE_MYSQL_HIDDENCOMMAND            -->
<style id="22" fore-color-light="#909090" back-color-light="#49483E" fore-color-dark="#909090" back-color-dark="#49483E" bold="No" />   <!-- SCE_MYSQL_PLACEHOLDER              -->
<!-- All styles again in their variant in a hidden command -->
<style id="65" fore-color-light="#999999" back-color-light="#49483E" fore-color-dark="#999999" back-color-dark="#49483E" bold="No" />   <!-- SCE_MYSQL_COMMENT                  -->
<style id="66" fore-color-light="#999999" back-color-light="#49483E" fore-color-dark="#999999" back-color-dark="#49483E" bold="No" />   <!-- SCE_MYSQL_COMMENTLINE              -->
<style id="67" fore-color-light="#DDDDDD" back-color-light="#49483E" fore-color-dark="#DDDDDD" back-color-dark="#49483E" bold="No" />   <!-- SCE_MYSQL_VARIABLE                 -->
<style id="68" fore-color-light="#66D9EF" back-color-light="#49483E" fore-color-dark="#66D9EF" back-color-dark="#49483E" bold="No" />   <!-- SCE_MYSQL_SYSTEMVARIABLE           -->
<style id="69" fore-color-light="#66D9EF" back-color-light="#49483E" fore-color-dark="#66D9EF" back-color-dark="#49483E" bold="No" />   <!-- SCE_MYSQL_KNOWNSYSTEMVARIABLE      -->
<style id="70" fore-color-light="#AE81FF" back-color-light="#49483E" fore-color-dark="#AE81FF" back-color-dark="#49483E" bold="No" />   <!-- SCE_MYSQL_NUMBER                   -->
<style id="71" fore-color-light="#F92672" back-color-light="#49483E" fore-color-dark="#F92672" back-color-dark="#49483E" bold="No" />   <!-- SCE_MYSQL_MAJORKEYWORD             -->
<style id="72" fore-color-light="#F92672" back-color-light="#49483E" fore-color-dark="#F92672" back-color-dark="#49483E" bold="No" />   <!-- SCE_MYSQL_KEYWORD                  -->
<style id="73" fore-color-light="#9B859D" back-color-light="#49483E" fore-color-dark="#9B859D" back-color-dark="#49483E" bold="No" />   <!-- SCE_MYSQL_DATABASEOBJECT           -->
<style id="74" fore-color-light="#DDDDDD" back-color-light="#49483E" fore-color-dark="#DDDDDD" back-color-dark="#49483E" bold="No" />   <!-- SCE_MYSQL_PROCEDUREKEYWORD         -->
<style id="75" fore-color-light="#E6DB74" back-color-light="#49483E" fore-color-dark="#E6DB74" back-color-dark="#49483E" bold="No" />   <!-- SCE_MYSQL_STRING                   -->
<style id="76" fore-color-light="#E6DB74" back-color-light="#49483E" fore-color-dark="#E6DB74" back-color-dark="#49483E" bold="No" />   <!-- SCE_MYSQL_SQSTRING                 -->
<style id="77" fore-color-light="#E6DB74" back-color-light="#49483E" fore-color-dark="#E6DB74" back-color-dark="#49483E" bold="No" />   <!-- SCE_MYSQL_DQSTRING                 -->
<style id="78" fore-color-light="#F92672" back-color-light="#49483E" fore-color-dark="#F92672" back-color-dark="#49483E" bold="No" />   <!-- SCE_MYSQL_OPERATOR                 -->
<style id="79" fore-color-light="#9B859D" back-color-light="#49483E" fore-color-dark="#9B859D" back-color-dark="#49483E" bold="No" />   <!-- SCE_MYSQL_FUNCTION                 -->
<style id="80" fore-color-light="#DDDDDD" back-color-light="#49483E" fore-color-dark="#DDDDDD" back-color-dark="#49483E" bold="No" />   <!-- SCE_MYSQL_IDENTIFIER               -->
<style id="81" fore-color-light="#E6DB74" back-color-light="#49483E" fore-color-dark="#E6DB74" back-color-dark="#49483E" bold="No" />   <!-- SCE_MYSQL_QUOTEDIDENTIFIER         -->
<style id="82" fore-color-light="#529B2F" back-color-light="#49483E" fore-color-dark="#529B2F" back-color-dark="#49483E" bold="No" />   <!-- SCE_MYSQL_USER1                    -->
<style id="83" fore-color-light="#529B2F" back-color-light="#49483E" fore-color-dark="#529B2F" back-color-dark="#49483E" bold="No" />   <!-- SCE_MYSQL_USER2                    -->
<style id="84" fore-color-light="#529B2F" back-color-light="#49483E" fore-color-dark="#529B2F" back-color-dark="#49483E" bold="No" />   <!-- SCE_MYSQL_USER3                    -->
<style id="85" fore-color-light="#66D9EF" back-color-light="#888888" fore-color-dark="#66D9EF" back-color-dark="#888888" bold="No" />   <!-- SCE_MYSQL_HIDDENCOMMAND            -->
<style id="86" fore-color-light="#AAAAAA" back-color-light="#888888" fore-color-dark="#AAAAAA" back-color-dark="#888888" bold="No" />   <!-- SCE_MYSQL_PLACEHOLDER              -->  

Remember to paste all these styles inside of the <language name="SCLEX_MYSQL"> tag in data > code_editor.xml.

enter image description here


Here's how to change MySQL Workbench's colors (INCLUDING THE BACKGROUND COLOR).

Open the XML file called code_editor.xml located in the data folder of the MySQL Workbench's installation directory (usually C:\Program Files\MySQL\MySQL Workbench 6.3 CE\data). Here you'll find a lot of styling for different code elements, but there are some missing.

MySQL Workbench uses scintilla as the code editor, and scintilla defines a few more styles that you can use in the code_editor.xml file. The one that is used for the background color is style id 32.

Here's the complete list for MySQL (scintilla has thousands of styles for many languages) with my configuration:

<style id= "0" fore-color="#DDDDDD" back-color="#2A2A2A" bold="No" />   <!-- SCE_MYSQL_DEFAULT                  -->
<style id= "1" fore-color="#999999" back-color="#2A2A2A" bold="No" />   <!-- SCE_MYSQL_COMMENT                  -->
<style id= "2" fore-color="#999999" back-color="#2A2A2A" bold="No" />   <!-- SCE_MYSQL_COMMENTLINE              -->
<style id= "3" fore-color="#DDDDDD" back-color="#2A2A2A" bold="No" />   <!-- SCE_MYSQL_VARIABLE                 -->
<style id= "4" fore-color="#9B859D" back-color="#2A2A2A" bold="No" />   <!-- SCE_MYSQL_SYSTEMVARIABLE           -->
<style id= "5" fore-color="#9B859D" back-color="#2A2A2A" bold="No" />   <!-- SCE_MYSQL_KNOWNSYSTEMVARIABLE      -->
<style id= "6" fore-color="#FF8080" back-color="#2A2A2A" bold="No" />   <!-- SCE_MYSQL_NUMBER                   -->
<style id= "7" fore-color="#7AAAD7" back-color="#2A2A2A" bold="No" />   <!-- SCE_MYSQL_MAJORKEYWORD             -->
<style id= "8" fore-color="#7AAAD7" back-color="#2A2A2A" bold="No" />   <!-- SCE_MYSQL_KEYWORD                  -->
<style id= "9" fore-color="#9B859D" back-color="#2A2A2A" bold="No" />   <!-- SCE_MYSQL_DATABASEOBJECT           -->
<style id="10" fore-color="#DDDDDD" back-color="#2A2A2A" bold="No" />   <!-- SCE_MYSQL_PROCEDUREKEYWORD         -->
<style id="11" fore-color="#B9CB89" back-color="#2A2A2A" bold="No" />   <!-- SCE_MYSQL_STRING                   -->
<style id="12" fore-color="#B9CB89" back-color="#2A2A2A" bold="No" />   <!-- SCE_MYSQL_SQSTRING                 -->
<style id="13" fore-color="#B9CB89" back-color="#2A2A2A" bold="No" />   <!-- SCE_MYSQL_DQSTRING                 -->
<style id="14" fore-color="#FFBB80" back-color="#2A2A2A" bold="No" />   <!-- SCE_MYSQL_OPERATOR                 -->
<style id="15" fore-color="#9B859D" back-color="#2A2A2A" bold="No" />   <!-- SCE_MYSQL_FUNCTION                 -->
<style id="16" fore-color="#DDDDDD" back-color="#2A2A2A" bold="No" />   <!-- SCE_MYSQL_IDENTIFIER               -->
<style id="17" fore-color="#B9CB89" back-color="#2A2A2A" bold="No" />   <!-- SCE_MYSQL_QUOTEDIDENTIFIER         -->
<style id="18" fore-color="#B9CB89" back-color="#2A2A2A" bold="No" />   <!-- SCE_MYSQL_USER1                    -->
<style id="19" fore-color="#B9CB89" back-color="#2A2A2A" bold="No" />   <!-- SCE_MYSQL_USER2                    -->
<style id="20" fore-color="#B9CB89" back-color="#2A2A2A" bold="No" />   <!-- SCE_MYSQL_USER3                    -->
<style id="21" fore-color="#FFBB80" back-color="#707070" bold="No" />   <!-- SCE_MYSQL_HIDDENCOMMAND            -->
<style id="22" fore-color="#909090" back-color="#707070" bold="No" />   <!-- SCE_MYSQL_PLACEHOLDER              -->

<!-- These two are for scintilla globally. -->
<style id="32" fore-color="#DDDDDD" back-color="#2A2A2A" bold="No" />   <!-- STYLE_DEFAULT                      THIS IS THE ONE FOR THE BACKGROUND!!!!! -->
<style id="33" fore-color="#2A2A2A" back-color="#DDDDDD" bold="No" />   <!-- STYLE_LINENUMBER                   -->

<!-- All styles again in their variant in a hidden command (with a 0x40 offset). -->
<style id="65" fore-color="#999999" back-color="#707070" bold="No" />   <!-- SCE_MYSQL_COMMENT                  -->
<style id="66" fore-color="#999999" back-color="#707070" bold="No" />   <!-- SCE_MYSQL_COMMENTLINE              -->
<style id="67" fore-color="#DDDDDD" back-color="#707070" bold="No" />   <!-- SCE_MYSQL_VARIABLE                 -->
<style id="68" fore-color="#9B859D" back-color="#707070" bold="No" />   <!-- SCE_MYSQL_SYSTEMVARIABLE           -->
<style id="69" fore-color="#9B859D" back-color="#707070" bold="No" />   <!-- SCE_MYSQL_KNOWNSYSTEMVARIABLE      -->
<style id="70" fore-color="#FF8080" back-color="#707070" bold="No" />   <!-- SCE_MYSQL_NUMBER                   -->
<style id="71" fore-color="#7AAAD7" back-color="#707070" bold="No" />   <!-- SCE_MYSQL_MAJORKEYWORD             -->
<style id="72" fore-color="#7AAAD7" back-color="#707070" bold="No" />   <!-- SCE_MYSQL_KEYWORD                  -->
<style id="73" fore-color="#9B859D" back-color="#707070" bold="No" />   <!-- SCE_MYSQL_DATABASEOBJECT           -->
<style id="74" fore-color="#DDDDDD" back-color="#707070" bold="No" />   <!-- SCE_MYSQL_PROCEDUREKEYWORD         -->
<style id="75" fore-color="#B9CB89" back-color="#707070" bold="No" />   <!-- SCE_MYSQL_STRING                   -->
<style id="76" fore-color="#B9CB89" back-color="#707070" bold="No" />   <!-- SCE_MYSQL_SQSTRING                 -->
<style id="77" fore-color="#B9CB89" back-color="#707070" bold="No" />   <!-- SCE_MYSQL_DQSTRING                 -->
<style id="78" fore-color="#FFBB80" back-color="#707070" bold="No" />   <!-- SCE_MYSQL_OPERATOR                 -->
<style id="79" fore-color="#9B859D" back-color="#707070" bold="No" />   <!-- SCE_MYSQL_FUNCTION                 -->
<style id="80" fore-color="#DDDDDD" back-color="#707070" bold="No" />   <!-- SCE_MYSQL_IDENTIFIER               -->
<style id="81" fore-color="#B9CB89" back-color="#707070" bold="No" />   <!-- SCE_MYSQL_QUOTEDIDENTIFIER         -->
<style id="82" fore-color="#B9CB89" back-color="#707070" bold="No" />   <!-- SCE_MYSQL_USER1                    -->
<style id="83" fore-color="#B9CB89" back-color="#707070" bold="No" />   <!-- SCE_MYSQL_USER2                    -->
<style id="84" fore-color="#B9CB89" back-color="#707070" bold="No" />   <!-- SCE_MYSQL_USER3                    -->
<style id="85" fore-color="#FFBB80" back-color="#909090" bold="No" />   <!-- SCE_MYSQL_HIDDENCOMMAND            -->
<style id="86" fore-color="#AAAAAA" back-color="#909090" bold="No" />   <!-- SCE_MYSQL_PLACEHOLDER              -->

For Ubuntu Users, the code_editor.xml is in

/usr/share/mysql-workbench/data

edit as you need, In Ubuntu which is a must need, some default used colours lacks contrast and it is unable to read, For a quick workaround you can also use this solution.

Visit this repo to get the full XML file.