The borders you're presenting are too busy and bright. I'd go for a simple matte-like frame and border as you would use for a painting. Select a small border that highlights a color you like to bring out from the quilt, then add a wider border around that with a color that supports the overall look you want, then add a final 'frame' color for the outer border that holds it all together. But don't go real bright on the two outer borders or it'll reduce the effect of the quilt as the focal point. Your quilt is quite nice and reminds me of needlepoint. Sometimes simple works best to set off your work.