One of the defining characteristics of modern quilting is the use of solids. There are so many great solids-only quilts out there, and here's a little sampling (taken from the Simply Solids Quilts group on Flickr). As you can see, a quilt doesn't need prints to make a statement.
1. P2ModernQAL-Front, 2. "Untitled 2011", 3. Front of Brit Quilt Swap, 4. Solid Stars - TwitterBee Solid 6, 5. Pixel Pusher, finished, 6. Argyle Baby Quilt Front, 7. IMG_1623, 8. 1000 Pyramids, 9. Rk Challenge - Side 2, 10. rainbolts baby quilt!, 11. NY Mod Show Quilt, 12. "everything's coming up rainbows" , 13. Fresh Quilt for Auntie Laura, 14. Cross Your Fingers Quilt, 15. Pixelated Color Wheel Quilt, 16. Stairway to Heaven Quilt Top
Of course, we don't only use solids in quilts, but it's nice to throw them in every now and then. If you want to see more solids-only quilts, check out the group on Flickr - there's over 2,000 pictures in that group alone!