Painting inside of doors to match interior?

[Gumball]

Has anyone painted the inside of their doors (or some portion) black or whatever color their interior is? I've seen some light colored cars with black interior and the inside door panels seem to standout quite a bit. Adding Herb's Door Panels helps tone down the color somewhat, but I'm thinking that just blacking-out the inner portion of the door may look even better.

Has anyone done this and, if so, can you post some pictures?