If the cabient boxes are in good repair, refacing the cabinets would be an option. If the cabient boxes are damaged (perhaps from a water leak) you may want to consider replacing them. There are many selections for a dark appearance, ranging from stain to thermofoil...good luck and please ask more questions. Happy to help advise you on this project.
MaryAnn....check out this article I wrote on refacing...it may give you some pointers