Flintfan,
I was using a 50/50 ratio of bone to wood on the test parts shown. We have tried a lot of other ratios, but that seems to be the mix that I keep going back to.
Thank you for the information. I figured it must have been a high percentage of bone to get those colors. You don't see those nice shades very often, mainly on the old English doubles that still are lucky enough to retain some of their case colors. Keep up the good work.