I've always wished SD would add organic colors to the list, which would look kinda cool on classic guitars, like tan, brown, gray, charcoal, olive etc.
I kind of doubt it. That sure would be a whole lot of work just to make a couple of bobbins. It would probably be rather expensive as well.
You could always try some of these. http://www.universaljems.com/cart/bobbin.htm
I have some cream ones on some pickups on one of my guitars so they have the zebra look. You can tell they're fake if you're right up on them, but you can't from a couple of feet away. Plus, nobody would even notice them if they weren't looking for them. I've had all kinds of friends play my guitar and they never noticed them. They have them in trem/F spaced.