I am in the same boat with some in that I dont have enough of some of the pinwheel blues to match up with the set it goes with. It is going to have to be ok, like someone said just match the values of blues. I am thinking of past quilts with Bonnie and it didnt matter but this one seems to be more focused on sets than the ones in the past. I have not played around with seeing how any of these units go together. My brain just cant imagine so I will no doubt be totally blown away when the reveal happens. My guess is she will give the last clue and the reveal at the same time. Lots of neutrals left!