There is another trick you can do without activating the print border option mentioned in other posts. Since borders are printed you can simulate solid background-colors with this hack:
.your-background:before {
content: '';
display: block;
position: absolute;
top: 0;
right: 0;
left: 0;
z-index: -1;
border-bottom: 1000px solid #eee; /* Make it fit your needs */
}
Activate it by adding the class to your element:
<table>
<tr>
<td class="your-background"> </td>
<td class="your-background"> </td>
<td class="your-background"> </td>
</tr>
</table>
Although this needs some extra code and some extra care to make background-colors visible, it is yet the only solution known to me.
Notice this hack won't work on elements other than display: block;
or display: table-cell;
, so for example <table class="your-background">
and <tr class="your-background">
won't work.
We use this to get background colors in all browsers (still, IE9+ required).