I think you could use almost any color with that. I like grays and creams with a coral color or maybe a blue?

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Or yellow/gold.

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I would rehang the artwork vertically, not horizontally. Without a headboard, guests find themselves leaning pillows on the wall if they want to sit and read before bedtime. Headboards on a budget can be found at consignment shops or Habitat’s ReStore. You could paint it or make a fabric slipcover to bring color and pattern to the room. Please avoid too many decor pillows because your guests will be uncomfortable piling them on the floor when they turn down the bedding at night. When I am a guest I prefer a hard pillow and a soft pillow so I can make a choice when I go to sleep. The money you save by not buying decor pillows can be put toward night stands and lamps.