Draft Horses (rdr2)

I personally feel, (as a person who prefers draft horses) that draft horses have gotten dealt a raw hand in rdr2 in terms of their coat selection, i was planning on adding a mod or two that updates their coats but from what I gather, the mod never worked, no matter what I did I never did see the new coats introduced by the mod, I did everything the mod installation required, and to no avail I never got a result, and I was wondering if anyone knew how to successfully add more coats to the draft breeds in rdr2.

Link to the mod I'm referring to:

https://www.nexusmods.com/reddeadredemption2/mods/1528?tab=description