Just fyi, I plasti-dipped an entire chrome bumper on my Tacoma and it lasted through 3 New England winters without a single imperfection before I sold it.
As for paint, I have painted my CX-5 emblems and they came out fine, but I never did put them back on (I had some custom decals made instead).
You can also get a satin/matt black flexible tape from some auto parts stores that is designed just for blacking out chrome. I used some on a previous car and it went on nicely and lasted years (plus you can pull it off if you change your mind).