To frame the quilt, I'd do a 2" (I assume that's the size of your sashing?) in the same color as the sashing, even if you have to hunt for the fabric. Then to start with, do a piano key border all the way around, using all the colors of the quilt. I'd run to the LQS and find some red and any other color you're out of but used in the center to use in that piano key border, which I'd do at 6". The outer border, I'd use the black and gold and make that 10" (18"). I'd take advantage of that wide final border and do some nice quilting there to frame the entire quilt. If you decide to cut down the size of the border, maybe change the piano key border to 4" and the black/gold to 6" (12" total). Nice quilt!!