Your quilt is amazing... I love the 2 color choices. I made MSQC's version of hunter's star last year in scrappy colors with tans. I quilted it FMQ allover with leaves and berries. I chose this quilting design because it reminded me of nature and added some curves to the very straight lines of the hunter star.
I quilted using a tan colored thread, which might work well for your colors. Perhaps something a little darker than your tan fabrics, (Khaki maybe?) so it doesn't show up looking white on your reds.