is there anyway to 'antique' an new leather sling?

[1-12 INF (M)]

I've had pretty good luck with Fiebings leather dye, but it will dry the leather out a good bit. I tried Lexol and Nokona baseball glove treatment, but went back to Kiwi mink oil dressing in a can. Worked into the leather, I ended up with dark brown ones from the raw tan color. Can't replace 50 years of GI sweat and oil, but they look pretty good.