Just add a new string to the english.csf example
In the Name field = Color:Grey
In the Value field = Grey
I just added about 10 colours lol, and alot of tool tips and descriptions for various units a certain Tech Mod R2.1 had called "Missing" lol. Much better now. The csf editor i have is real easy and makes the CSFs look not so daunting.
Reminds me of visual basic that im learning at college
Dont know if its the same editor or not because i cant be bothered checking, but hte one i got is from GenEdit2k:
http://www.genedit2k.com/downloads/utilities/