A Turning Twenty pattern would look really nice. Then there are the twister patterns. Depending on how much of the butterfly fabric you have, you could use that for your twisters and the other colors at the background. I just got a new quilt book called Fast and Fun First Quilts 18 projects for Instant Gratificaion by Sara Diepersloot. In there the patterns Cupcake Delight or Summer Camp would be PERFECT!!! You could also do solid squares of the butterfly fabric and then a star block using the other colors and alternate them with a solid color sashing and alternate color corner stone for each block.