I think it should be made clear to many that these cases are painted. The leather underneath is of course leather, which is relatively dark in colour. Paint wares fast, there is no way around this. They also cannot make a bare leather case because the leather is so thin. It's colour would be uneven and aesthetically unpleasing.
They would have to make these cases significantly thicker to use naked leather, which would cost more and have people complaining about the added bulk.
The wear will happen, very fast if you have sweaty hands and tight pants.
I don't understand why they make the white case, there is no way it will ever look good once worn.
Be gentle and stick to dark colours.