No worries
The First 2 screenshots are about the tabs repositioning when I change window.
Not entirely sure that this is a colourful tabs issue.
The first one shows the tab I have selected before switching window away from firefox.
The second shows how the tabs move when I select the other window.
The second 2 screenshots show how the tabs move if I reselect firefox by clicking a tab.
The first of these is before I select firefox and the tab that I select is marked by the x
The second is after clicking the indicated tab. Firefox is selected again and puts me on a completely different tab.
The tab it places me on is the same distance from the left of the screen as the one I clicked.
Hope this makes sense + Helps.
Please let me know if there's any other info I can give you or if you need more clarification on anything.
=]