gray for a small room, you can take calm colors such as brown or beige.
if you want to combine colors, blue and green is a good choice. this combination will make your room look cheerful and always fresh.
you can divide those two colors; one color on side beside the bed and the other is for the wall behind it. then in each block there are lines with different colors.
the color combination like the picture above looks unique with the curtain color adjusted to the colored line on the wall. it’s better if the color of bed cover is also fitted.
if you want to get comfort in the bedroom, then the 