I have just painted a basement room with no windows! I chose a very light gray. It is a blue gray and grays are very different, believe me. I always second guess myself, but I do like this a lot. I chose a creamy neutral for the trim, which gives it a warm feel. Now I want to add one or two colors in the furniture and decor. I am leaning toward a deeper warm blue and a soft limey green. I looked at the color charts and brought pamphlets of painted rooms home from the paint store and that really helped me see how colors look together. We are adding more florescent lighting with the cool white color of bulbs. good luck! Make it cheerful and use what you like, it's your room to go to every day!