I have a gun belt and mag pouch that are a medium brown. I'd prefer they were dark brown for various reasons. I like that shade better, it would match my holster, and besides, sweat has begun turning my belt dark brown in spots, anyway.
What do I use to darken the leather? Lincoln Stain Wax doesn't seem to do the trick. Neatsfoot oil is out, as it would soften it too much. Some kind of leather dressing, or dye?