I could see several ways it might cost more. Black may be the cheapest to manufacture for whatever reason. The current supplier may only supply black coatings and the other colors may have to be purchased from other suppliers so Dan's total volume of black might be reduced and it may cost incrementally more. Anytime you cut your volume in half with a supplier it's probably going to have some cost ramifications.

Supplying different colors could actually raise Dan's costs. It's not just a pigment of your imagination! <img src="/ubbthreads/images/graemlins/doh.gif" alt="" /> <img src="/ubbthreads/images/graemlins/barf.gif" alt="" /> <img src="/ubbthreads/images/graemlins/grin.gif" alt="" />