Foreword:

To get the best experience, combine this mod with Auto Hide Weapons for Cloaks, Accessory Slot Mod and Cheap dyes everywhere.

To use a dye, make sure to use it in the inventory and then apply it to the item you want. Drag and drop won't work because neither pocket slots nor accessory slots are compatible with this feature.

You can switch between hood-up and hood-down by pressing the keybind (see the optional step in installation section), or through the inventory menu. In the second case you just have to go in your inventory, select the slot with the equipped item, and press X on your keyboard or X on your Xbox controller (square on dualshock).



Content of the mod:

What you can find at Griffon Merchant (Bram in White Orchard): 

- The Cat armor hood (*)(*)
- A "Classic" model (*)(*)
- A "Pointy" model (*)(*)
- NPC Cape (*)
- A Tricorn (Model and textures provided by DerinHalil)
- NPC Hood (*)
- KM Cloak (*)(*)
- Bear Scarf (*)
- Fisherman Beanie

What you can find at Baron's Quartermaster: 

- KM Cloak Pointy (*)
- Baron Thug Scarf (*)
- A "Alternative" hood model (*)(*)
- NPC Alt Hood (*)
- A Beanie
- Crach Fur Alt
- Skelliger Hat 
- Bandit Mask (*)
- NPC Classic Hood (*)

What you can find at Elihal Shop: 

- Crach Cape (*)
- Crach Fur
- NPC Pointy Hood (*)
- Bard Hat (*)
- Merchant Hat (*)
- NPC Medic Hood (*)
- Vesemir Hat 
- NPC Medic Hat (*)
- Avallach Cloak (*)
- Novigrad Beanie (*)
- NPC Ornated Cape (*)

(*) Items with this symbol are dyeable.
(*) Items with this symbol have a toggleable hood.

Installation:

1. Put mod__hoods in your Mods folder.
2. Put dlc__hoods in your dlc folder.
3. Run ScriptMerger to deal with the potential conflicts.
4. (Optional) Copy-paste the content of Mods\mod__hoods\Hoods.input.settings at the very bottom of Documents\The Witcher 3\input.settings. By default the key is 9 on keyboard and hold right thumbstick 0.4 seconds. You are free to change them for whatever you want. 
5. You're done.

Credits:

Huge thanks to Aeltoth, menschfeind13 and eNoodles for the scripts.
The 3 first models I made are based on OakenSh's Ciri - Alternative look hood that I have adapted to Geralt and heavily edited.
Huge thanks to Ding for teaching me redcloth making.

Thanks to edvin76, you can now use the hood switching feature for you own mod as long as Hoods is installed on your game! To do that, your item must have the tag "ToggleHood"  and you must respect this naming convention:
- your hood-up model can be anything: "Your Item Name"
- your hood-down model must be identical + "Lowered" at the end: "Your Item Name Lowered"
It can be used for any type of items like helmets with visor, or anything you want basically.