Examine source code of wii/old internet theme

{
  "manifest_version": 2,
  "version": "2.0",
  "name": "wii/old internet theme",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "repeat-x"
      ]
    },
    "colors": {
      "toolbar": "rgba(123, 151, 193, 0.44)",
      "toolbar_text": "rgb(227, 234, 244)",
      "frame": "rgb(142, 168, 201)",
      "tab_background_text": "rgb(0, 0, 0)",
      "toolbar_field": "rgb(240, 240, 240)",
      "toolbar_field_text": "rgb(52, 53, 62)",
      "tab_line": "rgb(46, 72, 160)",
      "popup": "rgb(255, 255, 255)",
      "popup_text": "rgba(65, 77, 119, 0.57)",
      "icons": "rgb(17, 38, 91)",
      "tab_loading": "rgb(46, 72, 160)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{db8b59e1-c04a-4457-9e34-ad051eddf2f4}"
    }
  }
}