It looks like you can buy the quilt pattern already here:
http://www.quiltmoments.com/Home_Page.php
It's the "Keyboard Kaleidoscope" pattern that you're looking for... and this site shows the pattern made up using a Northcott group and another fabric group as well. (More ideas are always good, right?)
Finished quilt measures 80" x 88". Pattern includes multiple size options.