Yo i dont even no i sware i was playing cod waw to and i saw somebodys gamertag changes colors in the lobby and when we were playin. i was playing on seelow. but dude i really dont kno if there hackers i think they are.

There is some way you need to do it, and it involves having an account called "JD 2020" logged in on a separate controller, but I haven't figured out how it works quite yet. A friend of mine on LIVE does it, but I can't pry how to do it out of him. :(

Anyway, anyone can change their clantag to "BLUE" "RED" "YELW" etc etc, but I'm not sure on the Flashing colors one, scrolling colors one... Sorry, :/

No. if you bought the special edition you could change the colour. If change your clan tag to GRN,RED, CYN etc. it changes to that colour.