I have used Colorful Tabs for ages, and set colors by domain, but on this latest update i have noticed a difference with the about:blank tab. This tab is set to rbg(225, 225, 225), and has never been a problem, but now it has started showing up as light blue about half the time. I have only noticed this with the about:blank tab, though that does not necessarily mean it isn't a problem with other domains, and I haven't noticed it yet.