I dnt no if this has been posted but here it is :D
-download mw2 liberation
-when downloaded go to mw2 liberation setting document
-where it says "spoof name" erase it or make a new one
-If u put a "^#" before the number your name will be that color in game on the score board(if you are host)
If u have any questions PM me and dnt forget to thank me