I have cherry kitchen cabinets and love the paint color that the interior decorator selected - Shooting Star by Benjamin Moore. I think that it looks fabulous. The adjoining dining room has a sage green and the two areas look great together.
Regarding the cabinets being too formal for your rustic tastes, you might want to add some chicken wire door inserts to a few of the upper cabinet doors.
Perhaps some new cabinet hardware? White porcelain knobs? Pewter?