I've made some skins by making a copy of the void file changing it in photo shop form indexed color to RGB saving it as a 32 bit bmp file and then using paint, just painting my design straight over the top. then open it in photo shop and pasting the void back over the top and fading it out with the blending options in layers. that way you still get the details with no messing around with filters. I've had some promosing results. Oh and you have to change it back into indexed color otherwise IL2 won't open it. If you dont make it 32 bit when you save, it will go gray scale.
R A.