Any suggestions?

As I mentioned yesterday, I've almost finished the top of the Sunflower quilt, and here's the picture to prove it. It is really big, so it was difficult to find a place for a photo shoot, but you see most of it. It just needs those two side borders now and the top is done. Somehow, the back of my mind has decided that those borders should be a dark blue, but I'm open to other suggestions. The blue would go with the dark blue in the batik used on the edges of this block. I could also use a dark turquoise - (darker than the fabric with the white circles).

I've also auditioned a red, and that might work, or be too loud, depending on the shade, or maybe a green? I'm thinking that it needs to be a "quiet" fabric without a lot of pattern going on, because the rest of the quilt is rather busy, but I might be wrong... It will have to wait a while anyway, because I have nothing suitable in my stash to cut 6" borders + binding from (or the binding could be a different colour, I suppose...). So you see I have more questions then answers at the moment, so I'll just leave it to marinate for a few days, while I continue on the olympic quilt. I was going to work on that today, but good sister that I am (occasionally..) I made new curtains for my eldest sister's kitchen instead 0:-)<