Enter or names
^1 - RED ^2 - GREEN ^3 - YELLOW ^4 - BLUE ^5 - CYAN ^6 - PINK ^7 - WHITE ^8 - DEFAULT MAP COLOR ^9 - GREY OR DEFAULT MAP COLOR ^0 - BLACK
^8 changes color depending what level you are on. American maps = Dark Green Russian maps = Dark Red / Maroon British maps = Dark Blue
Greasemonkey User Script
You can also enable name replacement in Firefox using Greasmonkey
and the following user script:
Install: Steam Community (re)Namer