Ok, odd quilter out, I would add to my stash and beef up my fabric.
Is the quilt you are liking something you'll start shortly? Do you like it that much? Is it something that you recently found and can live without?
You have a goal in mind and it's some day doing a red and white quilt. That goal will keep getting pushed back if you don't have enough reds.
I've been quilting about 4 years now, I'm at the point that I'm taking advantage of sales to build my stash of colours I need for the future. In the beginning I picked up quilt patterns and the fabrics needed with a thought that I would quilt it up soon. 4 years later most of those are still not started. And I can't touch the fabric for other projects because they are "saved" for that particular pattern/quilt.
I don't know if that helps you but it's what I would do!