I keep a large stash of whites, white on white, cream on white, cream on cream by the bolt. This way the scraps can be used also in another quilt needing a lite background. I'm still doing good with not buying fabrics since Nov 2018 but then I just came back from a Quilt Bus Tour back then and came home with 60+ partial bolts of fabrics. Need I say more.
Love your pinwheels.