In my opinion, it should look more like the critter than the inventory image. If both can be combined, it would be even better.
Colour would be very similiar to critter while you will find little more details from inventory icon. I believe it will work fine that way.
CA MK2, Brotherhood CA will be more teal and Enclave one will be just black/dark grey.
What 'bout pants and that grey "under-CA" blouse? Should I make it another colour in any of other CA's? I believe in Enclave one black pants will fit much better(And will be easier to make
)
Can try makin' grey pants in MK2 and "blueish" in brotherhood one - Like paladin talking-head coif:
http://gfx.gaminator.tv/data/screen/561/686/2385-2.jpgIt's easy to change anyway.
@Up: Opaque?
"High tech armor, made out of advanced defensive polymers" but I can make it little less shiny. More like in original sprites.