Just make sure that the color of your background fabric fits the colors you use in your stars. Like using autumn colors in your stars and white background - looks much better with cream or tan as a background. Personal choice would dictate whether you choose a solid material or one that "reads" like a solid but isn't. I rarely use a solid color, preferring marbles for the interest the slight variations in color adds to a quilt.
Just have fun! The only person you really have to please is yourself!