How does one add textures to weapons?

Game Talk The Lab
1

I see that there is a place to add a symbol and color to an item/weapon but how do you reference that item to a texture in a graphics tileset?

2

You should add some code to \gfx{TILESET_NAME}\tile_config.json like this:

        {
          "id": "broadsword",
          "fg": 2490,
          "bg": 621,
          "rotates": false
        },
3

So what does “fg” and “bg” stand for or what do they represent?

4

first guess, Foreground / background