Don't be afraid of the dark colors in a bedroom, it actually creates a cozy cocoon feeling that is great for sleeping. I used this https://california-wallpaper.com/products/dark-wallpaper-birds-peel... dark bird pattern and it looks stunning with the natural light from the windows. The dark background makes the colors of the birds really pop and stand out. It feels very high-end and relaxing at night. Just make sure the quality is good so the dark colors don't look streaky on the seams. It's been my favorite room for a year.