Apparently concentrated Kool-Aid can be used as a pretty effective leather dye.
I was making a drink while cutting the snaps off some new straps for my pauldrons and I got curious, so I tried it, thinking, “ok even if this works, it will just wash out.”
It took the “dye” (undiluted) in about 3 seconds. After drying for about an hour and a half, it would not wash off in the hottest tap-water. It would not wash out after soaking for 30 minutes. It did not wash out until I BOILED it, and even then, only by a tiny bit and it gave it a weathered look that was kind of cool. Add some waterproofing and I’d wager it would survive even that.
That rich red is only one application too. Plus it smells great, lol.
So there you go, cheap, fruity smelling leather dye in all the colors Kool-Aid has to offer.