For GameText Colors:
[b]Text Colors
~n~ New line
~r~ Red
~g~ Green
~b~ Blue
~w~ White
~y~ Yellow
~p~ Purple
~l~ Black
~h~ Turn text colour lighter (used too much will make your text white, doesnt work on black) Special Text Letters
~u~ up arrow (grey)
~d~ down arrow (grey)
~<~ left arrow (grey)
~>~ right arrow (grey)
] displays a * symbol (Only in text styles 3, 4 and 5)
~k~ keyboard key mapping (eg ~k~~VEHICLE_TURRETLEFT~ and ~k~~PED_FIREWEAPON~. Look here for a list of keys