The curve of the polka dots drives my eyes crazy. I like the idea of either a very dark brown or black (my preference). You can place fabrics between the rows to find one that is pleasing to you. Put the fabric you are auditioning down then place the two rows of squares on top leaving the width you want(2 1/2")between them. I use this method for borders all the time. If I have to buy the fabric, I take my top to the store with me.