I Googled to find some options. How about a two-color Irish Chain?
http://www.quilt-lovers-guide.com/do...#axzz2uSyB5O00
Since everything is already cut into strips, you might want to get additional fabric for the centers.
Here's another option, which would be really easy:
http://www.fabricmom.com/2010/01/two...quilt-pattern/
Here are zigzag and lover's knot possibilities (free patterns):
http://www.fabricmom.com/2010/01/two...quilt-pattern/
A rail fence is super-easy and could look great in two colors:
http://www.sewwequilt.com/2011/01/hu...nce-quilt.html
And here is a modern design in two colors:
http://www.eschhousequilts.com/2013/09/favequilts.html