I would use a colr from the wallpaper usually the background color works best i would not combine metallic walls with that wall paper. BTW metallic paint is a b---h to do well

If you want the wallpaper to be a focal point don't try to take away from it by using metallic paint. Metallic paint, like Patricia pointed out, is a pain to work with. Stick to the wallpaper and a subtle paint color.

I had not considered this point. Thank you for the input!