Originally posted by aquaarmourydavi
Well how do you do the same thing but so that it only lasts for that persons visit, and when you come back to that page the next time, it has returned to its origional color?
The simple answer is that you can't, becuse it's a user setting in their browser.
However theoretically you could cheat by adding random parts to your links I guess.
In short, this is probably a lot more work to implement then it's worth.