First and foremost, a HUGE thank you to whistle8mp!!!
Okay. I did this as a two part process in order to achieve a darker color (especially on the bindings which tend to be a blend rather than straight up mohair).
First I dyed it, wrung it out and hung it up to dry. Start early, cause drying takes a long time.
Second, repeated the process, except I allowed the belt to lay in the dye and soak for approximately 10-15 minutes. Then, ring her out and hang her up again.
If you can have someone help you by holding up the belt whilst you ring it out, it makes the process easier and much faster.
The second tint step acts subtly, but definetely worth the added effort. Also, this particular stain darkness as it dries.
The color I used can be picked up at any Lowe's:
Minwax water-based stain, #13 Spice Red
They have to mix it for you, as it is a decoration tint formula. But that color is a standard Minwax tint color. Hope this has been helpful.
After first dye app (indirect sunlight):
After 2nd dye app (direct sunlight):
Done!