Just as someone said before, no quilt police here. Two colors would work great. I would go for a tonal or blenders instead of just a plain fabric. It adds a little dimension without overtaking the design. Also, I would most definitely consider a red outside border instead of cream for the reason stated above. Maybe you could do a small inner border in cream if you really like the color. I would love to see the final product. Also, draw it out before starting so you know exactly where to place everything and you are sure you like it before piecing.