minecraft-assets/data/minecraft/recipes/tinted_glass.json

{
  "type": "minecraft:crafting_shaped",
  "category": "building",
  "key": {
    "G": {
      "item": "minecraft:glass"
    },
    "S": {
      "item": "minecraft:amethyst_shard"
    }
  },
  "pattern": [
    " S ",
    "SGS",
    " S "
  ],
  "result": {
    "count": 2,
    "item": "minecraft:tinted_glass"
  }
}