According to designer Jessica Pakzad Bennett, the striped wall treatment in this room — part of a Newport Beach, California, project — sprang from a chance discovery during the planning stages. Although she and her client were debating light and dark blue stripes versus light and dark green ones, she grouped the four color swatches together and fell for the effect. Fortunately, her client did too.Upload photos of your own happy accidents to the Comments section below and tell us how the decor came about. You could see your space in a follow-up feature on the Houzz homepage.