I'm afraid I can't take credit for her, she was born in the factory. She came equipped with cream rings, and I liked the look, but they were a little on the "Band-Aid" side of the cream color spectrum and I wanted to get away from that. Looking for different options led me to stumble upon the wooden rings and I was instantly hooked. I'm not sure that I can say they do anything in particular to the sound, but I love the way they look and I love the way they feel and, well, that stuff matters! I found mine here:
http://www.pickuprings.com (Go figure!)
Whatever you do with those gorgeous Cocobolo rings, I look forward to seeing it!