Background colors on tabs change if tab is not selected
Operating system version
OS X 10.9.2
Description of the issue
I color-code each of the tabs on my tabbed interfaces, and the color I set shows up fine when the tab is selected. But when they're NOT selected, the 3 rightmost tabs all default to the same color as one of them. It isn't always the same one, either, but it seems to be the 1st of the 3 to have been created. Tabs to the left of that do indeed show the correct colors.
Steps to reproduce the problem
Create a tabbed interface with >3 tabs.
Exact text of any error message(s) that appear