OT: Traveller Imperial Marines

This one's off-topic, but ...   I use some of Grenadier's
old Traveller Imperial Marines as Stargrunt 2 troops. The other day I picked
up a couple of packs of UNSC troops, which look remarkably like Imperial
Marines. I think it's only fair that I paint my UNSC troops as Imperial
Marines, right? Anyone remember what color scheme they are suppose to have?

Thanks,