Suppose I can chime in with some words about ork/orc skin. I think the duller greens seem a bit more natural. Conveys a better sense of their fungussy nature. Let all the riotous colour stay on the equpment. Clan colours or whatever.
Now I have contribution type crap outta the way I can do the usual, "OMG! Those Warmaster guys is awesome!" type of post. I am very impressed with the level of detail on those little guys. You have a lot more patience than I do.