Join the next Boomerang swap, and use it as your swap fabric. Those ladies can do wonders.

Did you try comparing your fabrics outside in the sunlight??

It seems like it would qualify as a "light" fabric. Cut it into strips and throw it into your strips/scraps and use it as a light. That is, if you ever do this kind of scrappy quilt. Otherwise, just put it away for a while. You might be surprised how it might come in handy.

Were it me, I would take Kassaundra's suggestion, Those blocks they make are outstanding. Next would be a backing, Yes to me, backing is an important part of the quilt, but usually only for the idea/design concept. Except for baby/toddler quilts, every quilt I've ever made for myself or someone else and saw/used...Never even saw the back. Beyond that, If it really only goes with the other fabric from that collection, well theres that option. All the above suggestions are great, But the really main things is....Don't let it stress you out, lol. There are soooo many other things that slip into our lives we have to deal with, colors, quilting, sewing, creating is our joy and outlet.

That color would probably sing with Batiks. Batik colors blend so well for most projects. Bonnie Hunter says, " If it is still ugly, you haven't cut it small enough".

I am using a similar color for a background. Or you can put some fabric paint into a spray bottle and spray it to change the tone but still see the pattern.

Why not buy fabric to match it? Or use it for backing. That is what I would do.

All I can say is that it sounds lovely. A surprising background. Would it go with autumn colors or blues? Don't want it? PM me and we could make a deal. Really, if you love it just hold it for a while and it will find some color friends. You can then make your own masterpiece.