Examine source code of Smarty Green

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Smarty Green",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-006-51ab495c5f5dde6a3cddb22484acd00d.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(5, 102, 26)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(3, 78, 33)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgb(191, 217, 201)",
      "toolbar_field_text": "rgb(31, 106, 22)",
      "tab_line": "rgb(186, 217, 191)",
      "popup": "rgb(15, 66, 10)",
      "popup_text": "rgb(232, 245, 237)",
      "tab_loading": "rgb(186, 217, 191)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{6c27c7c7-ec1a-4310-8dea-b552dd137e0a}"
    }
  }
}