The colors and list stuff is a bit harder to implement, I'll take a loot at that tomorrow.
The "me" stuff however is easy, got that running. I've tested it with CS:S, DoD:s and TF2; everything works fine in CS:S and DoD:S, but the "me" messages aren't displayed when the player joins in TF2.
When typing "? me" as a command, the message works in every mod though.