With Colouring CS 1.6 you can write with 4 different colors in the chat area of Counter Strike 1.6:
F9 green chat message
F10 green team message
F11 team-color (CT/SPEC/T) chat message
F12 team-color (CT/SPEC/T) team message
When you are alive, colors will only appear if chatting with say_team F10 / F12.
I know there has been a recent trojan infection attempt with a similar software, I arrived here from google looking for that user, so I thought it would be nice to post my software here, I guarantee this is not a malware/adware/whatever, you can check my official info page
http://www.shockingsoft.com/ColouringCS16.html (~1000 downloads, no complains)
Some AV's may detect suspicious activity, this is because of how I created this software.
It has a .exe file, acting as a DLL injector, and a DLL loaded in memory that will be injected in hl.exe.
The DLL was written in Delphi 7 and ASM, I have tested it in Counter Strike only, not sure if it works on other mods, works with Steam too, but not on all servers, I think it doesn't work on those without metamod.
It has no public sources/documentations involved, I did some reverse engineering @ hl.exe and found several informations that helped me to create this.
DO NOT USE THIS WITH VAC/VAC2 SERVERS ! As I have said before, it injects a DLL in hl.exe, VAC detects this as cheat/half life engine modification.