[park4bmx]

in that case you can use numbers for a color which they will be stored as variable
and just used it like example im using this

pawn Код:

GangZoneShowForAll(id,16711888);

this makes my gangzone to blue with abit of transparent in it
EDIT:
another example

pawn Код:

new Color = GetPVarInt(playerid, "16711888");
SetPlayerColor(playerid,Color);