Midnight Armor Set is a collection of different types of black clothing, including boots, Hose, Chausses, Gloves, Doublet, Short Doublet, Pourpoint, Coif, Two Tunics, a Cotehardie, Hooded Scarf, Short-sleeved Pourpoint, and Two Hoods (up). It's made using in-game assets, but with unique item ID's, so it shouldn't interact with or effect any other armor in the base game.

Installation

Extract the.7z to your base game directory (/steamapps/common/KingdomComeDeliverance if you're using the steam version)

Hit yes to the prompt to replace files when asked (This is just for the localization file containing item names and descriptions)

That ought to be all.