From the author's README on Thunderstore

A fitted cap worn backwards with devil horns, ported to skate. (ReSkate).

Colorways (9)

Black, White, Green, Light Blue, Purple, Camo, Navy, Maroon, Gold

How to use

Install with a mod manager (or drop the folder into skate/Mods).
Launch skate through ReSkate.
Go to Skaters > Accessories > Hats and pick any Devil Cap.

Offline / single-player use only.

Credits

Cap model: @red''
Horns: Y9XQ
Port, fit and textures for skate: PTG

Install PTG Horned Fitted Backwards Caps

You need ReSkate and your own copy of skate. on Steam.

Open ReSkateLauncher.exe and go to MODS.
Search for PTG Horned Fitted Backwards Caps and click install. The launcher also installs anything it depends on.
Press PLAY. In game, the MODS tab of the ReSkate menu (Insert) turns it on and off.

Or install it by hand: download the .zip and drop it on the launcher window, or unzip it into its own folder in Mods\ beside Skate.exe.

Maps show up in the ReSkate menu's level list. To join a server running a custom map, you need the same map installed. If the game won't load after installing, see known issues.

skatemods doesn't host or review this mod. The download comes straight from Thunderstore. Only install mods you trust, because scripts can run code.