Green is good BUT you need windows to bring in the light......my one bathroom is in a light green kinda a sage green and its dark sometimes even with the window in there.........my sewing room is on the southeast side too and I have a large window my walls are white but I like it that way for many reasons.....you can have loads of color on your walls by putting small wall hangings(quilts) .......I also have a bullentin board that holds pics of grandkids so I can see them when sewing......when you think about it your window coverings and your accessories will give you lots of color......I guess Iam always looking to change all the time so rather then moving everything everytime you want a change moving things off the walls is much easier then painting for me anyways.....just my opinion....Trish