I contacted a few of our great sponsors here and a couple manufactures. Some of which were nice enough to send me a few samples for me to test colors.
To those that helped me out THANK YOU!
I found that trueflight yellow and bearpaw yellow are about identical.
The amg sungold is slightly more golden..actually a very pretty color. And would do a fine job of matching "fresh" osage.
The gateway desert brown and the truflight autumn brown were very close in color. The trueflight had a little more "iridescence" to the feather while the gateway looked more "flat".
Both are slightly more orangish brown than the osage ...but it's a pretty close match.
I liked the look of the trueflight more than the gateway.
I'll be going with the trueflight mostly because the bases are thinner and ground more true than the gateway in my very little experience.
Just thought I'd pass along what I've learned.