I know what you mean about the color coordinating. I am kinda the same way.
However, interestingly enough...the Mason-Dixon gals said they always have a hodge-podge log cabin in the works, one in dk weight leftovers, and one with worsted weight leftovers. They also said they do not color plan...they just tack on whatever leftover yarn is available from the most recent FO. In other words, I don't think they let orphan partial skeins build up.
It is an intersting concept. Like the soup my mom used to make on Friday nights. It contained all kinds of leftovers from Sun-Thurs meals! Oddly, it really was good, and with hot homemade bread to go with!