I think you need to separate your fabrics...much like you have them laid out...into lights and darks. Now Google 2 color quilts, OR red and white Quilts, OR blue and white quilts. make it scrappy, any pattern. Are you familiar with the pattern called my blue heaven, by Bonnie Hunter? ...or talking turkey, also by Bonnie Hunter? They are scrappy, but mainly two color quilts. It could be purple and white, or there are beautiful samplers, done in mainly 2 colors.