Joanna's favorite paint colors. Moving on to some nice accent colors. Joanna has said that she really favors airy blues and greens. I can say without a doubt that Sherwin Williams Sea Salt is one of the prettiest paint colors I've ever used. It's no wonder why its such a popular color with Joanna and other designers. It's the perfect blue green, and looks great in any room. I used it in my bathroom and laundry room makeovers!