Valid options are: crowbar, medkit, knife, spanner, shotgun, supershotgun, nailgun, supernailgun, grenadelauncher, rpg, sniperrifle, railgun, flamethrower, assaultcannon, autorifle, tranq, pipelauncher, ic, tommygun, deploysentrygun, deploydispenser, deploydetpack, tommygun, umbrella
Disable with cl_chat_colorize 0
cl_chat_color_default sets default chat message color(defaults to current orange). it's a string, and takes an RGB, so e.g. ''cl_chat_color_default "255 170 0"''