I'd suggest talking to some of your local hardwood or exotic wood suppliers and see if they know where to find some green wood, then. I suspect you'll find cost will most definitely be a factor when you start seeing $50+ /bf for importing specific exotics, unless you happen to just be lucky and find something near you.
As for being secretive, I suspect it's unnecessary, but that's your choice. If you can give us some of the other wood choices, that may help us refine some options as well. I'd personally go with a maple and use an analine dye to make it green, myself. You can get some amazing colors and still see the natural grains of the wood. You will also get a much more even (likely) coloring that way and you can make it as light or dark as you like.