Oh, Mama, the possibilities are endless! I'm making patriotic quilts for Quilts of Valor, a wonderful org that sends them to returning service men and women, and we've done a ton of them in red, white & blue.
If I were you, I'd use both fireworks and add some white or tone-on-tone and maybe some gold. Any star design would work along with another choice or two. At the moment, I'm working on a simple two block quilt which consists red and white Rail Fence and white Friendship Stars on a blue background.
I'm sure others have more suggestions, but what kind of blocks did you have in mind for your quilt?
Dorothy in PA