Hello,
To the right of the design you will see it's details....sizing dimensions, what kind of floss it uses and what kind of fabric uses. White Willow usually doesn't give a specific fabric for their designs and they usually leave it up to the stitcher, stitching the design. So that's why you will see the "Any count, any color" term listed there :) You can use whatever you desire! Our default for those types of designs is 14ct. White Aida fabric, so you should see that in the Fabric listing under the Supplies now. For some reason, I didn't have option active before but it should be listed there now. Hope this helps :)
~Kristi @ ECS