I'd go with a mix and match setup but either option should be fine. Personally I think not having one solid colour all over looks better, but it does depend on the kit.
Airsoft Forums UK
Esoterick
TacMaster
I'd get the combat set in kyrptek typhoon or BMC and have your vest/helmet etc in black. Breaks it up a little and mixes your outline too
Colonel Kurtz
all bleck, then just need an umbrella corp patch and a gas mask 
