I'm about to paint my new BW darkroom. It is 9x12 with 7'6" ceilings. Textured drywall. What color do you like?

I've been in black darkrooms, grey DRs, white DRs. I have white now and it is fine, but dull. I've been thinking of painting the ceiling a midnight blue and then the walls either a warm white or neutral grey. I think too strong of a color on the wall might throw off the color in my prints, but I don't know. Only going to paint it once.

Thanks