Would this look bad in a pastel green room?
If it’s a grassy type green, then I’d grab some throw pillows in the same green and put them on the bed to make it work. But if it’s pastel green, I don’t think it will be successful. A room is easy to paint – and if you love the bedspread, why not try painting the wall a warm shade that will match the tone of the bedspread (like a warm tannish gray or a neutral olive green!) Good luck!