Hi,
If you set a background color a whole table row, the color is sometimes not set correctly. If you try again with a different color, the problem usually persists and confluence produces HTML code like this:
<td class="confluenceTdhighlight-blue confluenceTdhighlight-yellow confluenceTdhighlight-green confluenceTd" data-highlight-colour="green"><br></td>
I guess it is not desired that the highlighting CSS classes are applied multiple times. Instead they should be removed when a new color is set for a cell or a row.
If you place the cursor in single cells and then select a background color it always works correctly.
Can anyone reproduce this behaviour?