Examine source code of Green Grids

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Green Grid",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-005-f5f3cf677b1f132c75ddc7bd319dd1fc.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(7, 84, 15)",
      "toolbar_text": "rgb(67, 218, 75)",
      "frame": "rgb(14, 65, 18)",
      "tab_background_text": "rgb(24, 180, 70)",
      "toolbar_field": "rgb(38, 102, 41)",
      "toolbar_field_text": "rgb(24, 180, 70)",
      "tab_line": "rgb(67, 218, 75)",
      "popup": "rgb(7, 84, 11)",
      "popup_text": "rgb(24, 180, 70)",
      "tab_loading": "rgb(67, 218, 75)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{f6ccfd74-3f58-4406-b06d-debf60294882}"
    }
  }
}