Here are some pictures of 2 log cabin quilts with 2 fabrics, with a 3rd added in for the centers. The quilts are interesting, attractive, with a rather stark look, much like Amish quilts. Although I am more attracted to scrappy quilts, I can also appreciate these.
http://timquilts.wordpress.com/2011/...bin-quilt-top/ These were done with solid color fabrics.
If you look at google images of "2 color log cabin quilts" you will find a few more examples.