The green accents are snot green + chaos black at about a 90/10 mix. The white is from Reaper and its there pure white. I think it is more pure then GW's white. Some shining Gold there and Brazen Brass. Blues are P3 from the Cygnar set, and the reds are from reapers red triad.
To get the white night and bright over a black undercoat I put a layer of Reaper Storm cloud Grey before applying the white. I will be adding some weathering on the legs and wear surface with Vallejo pigments. The base is from Dark Art Miniatures, and is the lava flow design.