You can powdercoat over chrome .

Ive mentioned in another post about powdercoating that there are translucent color powdercoats available. If you were to paint the bike red for instance you would see the chrome base to it making it look like an anodized red coating. Now if you were to mask of the rear like a cinelli frame and then get a translucent candy red over the front chrome........YUMMIE!!!!!!!