I have the same problem on my testicles. its completly covered the front of them, and as my skin is tanned, it looks very strange
What can we do man? as you said, theres no cure, all you can do is what i used to do and that is buy some of that fake tan stuff (unless you dare going to the doctors and getting some stuff that they match to your skin type - which i would never be able to do

)
Just get used to it, its a right *****, do you have it anywhere else? i've got it on my hands aswell.
p.s i was told there is suposidly a way to treat it using UV light - a chemist told me this, but havent seen anything on the web about it.