Examine source code of Pink Halloween

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Pink Halloween",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(251, 129, 180, 0.54)",
      "toolbar_text": "rgb(0, 0, 0)",
      "frame": "rgb(251, 129, 180)",
      "tab_background_text": "rgb(255, 138, 187)",
      "toolbar_field": "rgba(251, 129, 180, 0.66)",
      "toolbar_field_text": "rgb(0, 0, 0)",
      "tab_line": "rgb(255, 38, 129)",
      "popup": "rgba(247, 108, 166, 0.76)",
      "popup_text": "rgb(0, 0, 0)",
      "button_background_hover": "rgb(251, 129, 180)",
      "icons_attention": "rgb(219, 4, 94)",
      "icons": "rgb(0, 0, 0)",
      "ntp_background": "rgb(255, 163, 202)",
      "ntp_text": "rgb(219, 4, 94)",
      "popup_border": "rgb(219, 4, 94)",
      "popup_highlight": "rgb(255, 163, 202)",
      "tab_selected": "rgba(251, 129, 180, 0.85)",
      "tab_text": "rgb(109, 1, 46)",
      "toolbar_bottom_separator": "rgb(255, 138, 187)",
      "toolbar_field_border": "rgba(251, 129, 180, 0.85)",
      "tab_loading": "rgb(255, 38, 129)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{f9ce749a-9194-4b8f-bc98-8de87d0192f4}"
    }
  }
}