Also the format is not "r,g,b" its "R G B" ie:
NPC Code:
profile.fontcolor = "0 255 0";
that is the format for colors in GS2 GUI's... also I am not 100% sure but I know with GuiMLText you have to do somethign like <color:rrggbb> and everything after that is a certain color (cant do </color> btw)