Here are a few new colors for the Z4. All these skins include my leather interiors. The original colors are also replaced with higher quality paintworks (the colors stay the same).
The suits where made by blackcelica and I edited the color of the helmets.
Note: for some reason, loading directly most of these skins in the showroom will make it crash. You'll have to load the white skin and then navigate to the others once in the showroom.
Installation: in your skins folder, delete all color folders (black, black_matt, blue, default and red), then unpack this archive.