here's a link to a fabric line called "Indigo Blues" by Henry Glass. It doesn't show it properly on the website, but the fabric is REVERSIBLE ... so you can use one side for one block, and the other side for another block. There is a solid that matches perfectly. I just finished a quilt with this fabric line.
The website also has some nice free patterns to download for this line.
http://www.henryglassfabrics.com/col.../indigo-blues/