Examine source code of Green macx

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "MACX753",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-000-5672c42860d5b06e1058dc477397f3ef.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(166, 203, 166)",
      "toolbar_text": "rgb(49, 64, 49)",
      "frame": "rgb(88, 118, 106)",
      "tab_background_text": "rgb(43, 49, 43)",
      "toolbar_field": "rgb(255, 255, 255)",
      "toolbar_field_text": "rgb(58, 68, 57)",
      "tab_line": "rgb(80, 132, 80)",
      "popup": "rgb(239, 249, 239)",
      "popup_text": "rgb(98, 80, 72)",
      "icons": "rgb(55, 77, 55)",
      "tab_loading": "rgb(80, 132, 80)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{1cd0474e-1af1-4021-bb17-dc9f23f88a56}"
    }
  }
}