Rockz/tf/custom/hud/resource/ui/hudDamageAccount.res
"damageAccountValue" change the fgcolor to your desired one
in your case 0 255 255 255
also for future references, please use this thread http://www.teamfortress.tv/19073/hud-editing-short-questions-quick-answers
Thank you very much, I also appreciate the added information regarding the thread, I did not know it existed apologies