I'm not very good at choosing paint colours etc. The spare room in our house needs a revamp. I don't really want to buy new curtains. I have stupidly bought (and opened so can't return) new bedding without really checking the colours (it will match) but I now don't have any idea what colour to paint the walls. Carpet is "greige". Pic of curtains attached. Walls are currently blue. The bedding I've bought is sort of a muted gold (plain). Room is north facing