Nice to see more behavioral personalization. The best thing about it is that it’s completely passive for the user. Though I think small color changes may be a bit too subtle to be useful.
From the sbc-yahoo commercials, I gather that My Yahoo has finally tapped into this sort of personalization. Yahoo has a huge amount of data on users. Tracks every page view visited on the y network, every search, etc. This is datamined into a very detailed profile, which was generally used for targetted advertising. I put together a prototype tool, that suggested My Yahoo content based on the datamined profile. Nice to see it finally released, 1.5 years later 😉