I'm fiddling a bit with SteamVR Workshop to recreate the atic. I've modeled the top of a desk and I wanted to give it proper coloring. So I used a texture. This is the first texture I have ever created, so this might be a noob question. It seems not all colors are in the right spot.
This is how the texture is put together
Where could these black faded spots come from?
Or maybe it is not entirely fair to ask it in blender.stackexchange.com, as in blender, all looks fine. But, since I have such little experience with texturing, maybe I did something wrong?