Examine source code of Electric Fun

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Electric Fun",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-045-3e6898966e6ccdc87f80d23d4e7a6a49.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(255, 0, 190)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(114, 229, 241)",
      "tab_background_text": "rgb(157, 8, 119)",
      "toolbar_field": "rgb(114, 229, 241)",
      "toolbar_field_text": "rgb(157, 8, 119)",
      "tab_line": "rgb(255, 252, 0)",
      "popup": "rgb(114, 229, 241)",
      "popup_text": "rgb(157, 8, 119)",
      "button_background_hover": "rgba(255, 255, 255, 0.39)",
      "icons": "rgb(253, 253, 253)",
      "ntp_background": "rgb(151, 231, 245)",
      "ntp_text": "rgb(67, 17, 65)",
      "sidebar_text": "rgb(157, 8, 119)",
      "sidebar": "rgb(151, 231, 245)",
      "tab_loading": "rgb(114, 229, 241)",
      "tab_selected": "rgba(255, 0, 255, 0.34)",
      "tab_text": "rgb(255, 255, 255)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{11523a91-3d49-4d51-9a08-98383d4af731}"
    }
  }
}