I'm glad I found this thread. I just discovered
PreQuilt and it has so many designers and their quilts.
I'm working on selecting colors for a Double Dash quilt by Cotton & Joy. And they pointed me to
these digital coloring pages. It includes all sizes for every quilt that Cotton & Joy sells!
I'm now playing with it and just discovered that you can "edit" the sample display colors to use solids or prints. For solids you can select from 20 different designers and their colors and for prints it seems like a bazillion prints are listed.
When you're done you can download the design and separately download the color key (with designer name like "Riley Blake" and the color, such as "Peaches n' Cream").
This is going to be so fun! It will def be more work than just graph paper and color pencils, LOL.