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I've seen this problem come up in a couple of skins, and it always comes up when I run skins on my halo. How do you get the ghost's natural purple color from coming through the skin? Do you have to change a tag or something?
~Thanks!
EDIT: it appears like it could be related with the cubemap and detail banshee bitmaps... I will test and may have solved my own problem.

Im not really understanding your question.

you hav to edit the cubemap banshee.dds, thats what gives the ghost and banshee their purplish color.