[eclipse] Revert to Eclipse default settings

I was having this problem in Eclipse Luna (4.4.2)

  1. Exit Eclipse
  2. Deleted the following under the .metadata/.plugins/org.eclipse.core.runtime/.settings directory
    • com.aptana.theme.prefs
    • com.github.eclipsecolortheme.prefs
    • org.eclipse.e4.ui.css.swt.theme.prefs
  3. Started Eclipse
  4. In Preferences > General > Appeareance > Color Theme > check "Set all background colors to default"

Without step 4. a vertical strip near line numbers remained the older background color