I found a book in a batch of patterns my stepmom sent me (which she got from someone else, but thought they were too good to throw away -yay!) that is patterns for doing Amish style quilts made out of crocheted blocks, patterns like Trip Around the World.
I think in the book, they are made separate and sewn together.
I bet it would be possible to do at least some of it with color changes.
A new project for later!
Worth a try, to avoid any sewing! The pattern I had wouldn't have worked that way, as each square had a different number of stitches and rows. they all ended up at 12"x12"