I discovered the Ultimate 3-in-1 Color Tool and used it to choose fabrics for an illusions class. I started with my border fabric and chose nine colors that played nicely with it. I don't know how I ever picked fabrics without it.
I've attached a closeup of one block and the finished top.
Linking Blocks
[ATTACH=CONFIG]237309[/ATTACH]
Illusions Sampler
[ATTACH=CONFIG]237310[/ATTACH]