You can make all your armor match the chest piece. That's already in game. It's an option under the Character/equipment screen.

My 2 cents... PvP...PvP gear stronger than Crafted. Crafted stronger than PvE. PvE...PvE gear stronger than Crafted. Crafted stronger than PvP. The Expertise stat should be able to make this possible. Crafters should be able to customize the looks of gear/vehicles. For example , a guild wants all members armor to be white with blue markings.