To me it is the kind of quilt where you want to quilt to be the main attraction, not the quilting. If you have a varriegated thread with the colors you just mentioned, you could do just simple loops. I like varriegated threads in the same colors of the top because the quilting tends to hide and your fabric shows better. I never use varriegated when using solids, unless I want to get attention to the quilting. I am looking forward to see what you decide.
Maria