Have you tried Raizin yet? Its a really pretty color. I think it reflects more bronze though, I havent tried it in years.
I have Grape piggie I can try it tonight and see what it looks like.
Im thinking lines like Fashion Fair or Black Radiance would have deep purple colors. They always think thats all darker people want on their cheeks.
Do you have any purple e/s? Try those on your cheeks too
Oh and I did try a Bare Minerals Loose Purple eyeshadow on at sephora it was gorgeous! ( I didnt buy it though) but check those out too.