Look for an old Bianchi on EBAY. . .very hard to find. I slipped up on this one from the 1970's that fits any K Frame snub up to a 2.5 inch barrel and accommodates fixed and adjustable sights. It's the most perfect snub holster I've ever seen. Finding one in black will be about as difficult as finding one in brown. It's marked S&W K #5B. The 5B came in lots of barrel lengths. You will have to make sure it's for a snub.
You know, I don't know whether you are aware of it or not, they actually have a product on the market called leather dye.

