Can I paint chair rail same color as wall?

In a small bathroom, can I paint the ceiling the same color as the walls? When does that look good – when should you not consider anything but white ceilings? Is that a new look?

Hello, I have just painted a accent wall in Chocolate brown and the main wall color is Jackson Tan. My question is what color would compliment these colors? It is for my kitchen. I am desperately seeking help. Thanks so very much.

We’re getting ready to paint a house we just purchased. I was wondering if the inside of closets should be painted the same color as the rest of the room or left painted white.