I wanted the walls to be bright but still mature, so I used a blue-gray. I have always been drawn to red and yellow so I chose items I liked, regardless of whether they were "too bright" or clashing. The room makes me happy and relaxed, which is exactly the feeling a living room should have.
Colors used in my room:
Red, Blue, and yellow.
Tips for using color successfully:
Choose the colors you naturally gravitate toward, regardless of whether or not they are in style or on trend. If you pick a palette that makes you happy it will never go out of style for you.