I bought a turquoise duvet cover for my bedroom and I loved it so much I painted the bland white kitchen cabinets a color that always makes me smile. Once I did that walls were screaming for a proper back splash. Since that wasn't in the budget, I painted one!
Colors used in my room:
Turquoise, Black, White, a grey, toned neutral and jewel toned accents
Tips for using color successfully:
Color is wonderful, but to keep everything from looking like a circus -- incorporate neutrals.