I just repainted my sewing room and because blue is my favorite color I had the walls painted light blue. I love it and if it has interfeared with my seeing the true color of my projects I sure haven't noticed it. I love the room and spend a lot of time in it. So I agree with everyone else use the color you are comfortable with and if bright yellow is what you like use it. We need to make our rooms a place where we feel good in and happy in.