Examine source code of Star Wars Death Star

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Death Star",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right center"
      ],
      "additional_backgrounds_tiling": [
        "no-repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(0, 0, 0)",
      "toolbar_text": "rgb(207, 207, 207)",
      "frame": "rgb(0, 0, 0)",
      "tab_background_text": "rgb(241, 241, 241)",
      "toolbar_field": "rgb(44, 44, 44)",
      "toolbar_field_text": "rgb(255, 155, 155)",
      "tab_line": "rgba(252, 73, 75, 0.69)",
      "popup": "rgb(0, 0, 0)",
      "popup_text": "rgb(78, 159, 78)",
      "button_background_active": "rgb(121, 121, 121)",
      "button_background_hover": "rgb(70, 70, 70)",
      "frame_inactive": "rgb(0, 0, 0)",
      "icons_attention": "rgb(255, 121, 121)",
      "icons": "rgba(99, 255, 107, 0.69)",
      "ntp_background": "rgb(13, 13, 13)",
      "ntp_text": "rgb(255, 255, 255)",
      "popup_border": "rgb(161, 84, 84)",
      "popup_highlight_text": "rgb(255, 255, 255)",
      "popup_highlight": "rgb(49, 49, 49)",
      "sidebar_border": "rgb(255, 110, 110)",
      "sidebar_highlight_text": "rgb(255, 57, 60)",
      "sidebar_highlight": "rgba(82, 82, 82, 0.69)",
      "sidebar_text": "rgb(222, 222, 222)",
      "sidebar": "rgb(0, 0, 0)",
      "tab_background_separator": "rgb(187, 61, 61)",
      "tab_loading": "rgb(255, 145, 145)",
      "tab_selected": "rgba(53, 53, 53, 0.72)",
      "tab_text": "rgb(248, 248, 248)",
      "toolbar_bottom_separator": "rgba(146, 146, 146, 0.72)",
      "toolbar_field_border_focus": "rgba(119, 179, 93, 0.72)",
      "toolbar_field_border": "rgba(176, 176, 176, 0.72)",
      "toolbar_field_focus": "rgba(0, 0, 0, 0.72)",
      "toolbar_field_highlight_text": "rgba(0, 0, 0, 0.72)",
      "toolbar_field_highlight": "rgba(110, 255, 105, 0.72)",
      "toolbar_field_separator": "rgba(161, 84, 84, 0.72)",
      "toolbar_field_text_focus": "rgb(255, 138, 138)",
      "toolbar_top_separator": "rgba(255, 98, 98, 0.72)",
      "toolbar_vertical_separator": "rgb(255, 155, 155)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{96db98ec-07ad-435e-a211-6479cbae9535}"
    }
  }
}