Yellow and beige paint? I think I would lose the yellow paint, either replace it with off-white or all beige. Pick up your favorite colors in your comforter/duvet. I would go with black as my accent color, it will go well with the beige, brown and stainless. Not yellow!

Yellow and beige don't work together. Maybe the colors you are talking about aren't what we envision. Can you post pictures, please? That will give us a better idea of what you need.