Blue, specifically turquoise, has always been my favorite color. When we bought our home, the original tile from 1928 was still around the fireplace, and it just happened to be turquoise. I kind of started decorating around that, using shades of turquoise and red (because every room could use a little happy). I recently added the mustard yellow with the sofa and a few accents.
Don't be afraid to try anything, you might find an "accidental" color is something you love (like my mustard yellow sofa) and adds a pop to the room. Find one statement item you love, no matter the color and decorate around it.