I just repurposed a bedroom to my sewing room and painted it gray, but with more beige in it than blue. I have lots of natural light as it faces south and has a bay and two side windows. I painted the old wood floor a darker shade of the same color and have white cabinets/surfaces throughout. I love my room and spend time in there every day. I think the gray is neutral enough that it doesn't take from the color of the fabrics.