We have a small attic bedroom which needs a few look. It's one window faces east, there's lots of sloping ceilings and an old cast iron fireplace on the biggest wall. I'm drawn to blues and greens but I don't want it to feel colder than it already does. It's also slightly L-shaped and that bit is particularly gloomy. I still have a huge amount of dulux's timeless leftover from another room but I think the attic needs more colour. Any recommendations? Thanks so much!