SFGate

claudiann I would think about only painting the lower cabinets. Your kitchen might be too dark with all black. Could you just replace the top cabinet doors?

Bellamira Design You could glue molding onto the doors, even put a raised panel on them. Paint them an off-white (gray tone). I agree with Claudiann, all black would be too much. Paint the bottom cabinets black. Of course, new hardware/door pulls will make all the difference.

sjkingston You could use flat ~2" wide wood trim around the edges to create a Shaker look and then paint them. You don't have to miter the corners like with regular trim molding. If the back side edges are flat, you might be able to flip the drs so the outside rounded edge is inside and get a flat edge to work with. A lot of bloggers out there have done this so search the internet with an expression like "add trim to kitchen cabinets blog.". The use of the word blog in search will get you to various blogs, who often refence each others work.

Dytecture Consider changing the door pulls to the long, sleek ones.

Urbana ~ Designer Ellen Crystal an applied moulding 2-3" in from the edge is only solution if the doors round over on the edge. the building supply store will have many choices. explain where you are using it. 1/2" thick max, 1/2 to 1 1/4" wide. it can be simple, then paint. Also, if you are clever with paint you could do a illusion of a moulding by carefully painting. Look through books on DYI " trompe l'oeil" techniques. Most important is consistency. if you do all dark paint, will be dramatic but carefully consider the light & your lighting if you do. you'll often see black as accent, but not often whole space. research first. Perhaps do lowers first then decide if you want to go 'all in" for uppers.