Haven & Hearth is an amazing game, but there is nothing ground breaking or never seen before systems in it. Here is my idea, (semi)custom content! Lets say you want a hooded blue cloak with red trim. This would work like equipping an item, except the item is equipping another item. Here is how you would make that cloak.
1. Make a white cloak
2. Attach a hood
3. Get blue dye from grinding inkweed on a quern (red is mullberry, purple is both mixed, green is leaves, yellow is apple core, so forth.
4. Apply dye to white cloak to make a blue cloak.
5. Make white trim
6. Dye trim red
7. Attach to blue cloak
8. ???
9. Profit
And there you have it! How this would work code wise, is there would be cloaks of all colors available, and hoods of all colors available, and trims of all colors available, and they are attached to the cloak like the game would attach a pair of shoes to your character. This idea would work for a wide range of content, but I am just throwing this out there. Thanks!