{
    "format_version": "1.21.70",
    "minecraft:client_biome": {
      "description": {
        "identifier": "swampland"
      },
      "components": {
        "minecraft:fog_appearance": {
          "fog_identifier": "rd:swamp_fog"
        },
        "minecraft:water_appearance": {
          "surface_color": "#4c6559"
        },
        "minecraft:sky_color": {
                  "sky_color": "#7b846e"
              },
              "minecraft:foliage_appearance": {
                "color_map": "swamp_foliage"
        },
      "minecraft:grass_appearance": {
        "color": {
          "color_map": "swamp_grass"
              },
              "minecraft:atmosphere_identifier": {
                "atmosphere_identifier": "rd:swamp_atmosphere"
              },
              "minecraft:water_identifier": {
                "water_identifier": "rd:swamp_water"
              }
      }
    }
  }