He also really wants Black wheels, I dont know why.
This is why...
He's already painted it green
No further explanation required.
Just get a set of cheap Black wheels from Niagara Cycle
http://www.niagaracycle.com/index.php?cPath=135_200
If the width of the frame isn't an exact match just spring it apart and make it fit. The bike's already drewed, there's no reason to treat it gentle at this point.