Examine source code of Hulkitten

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Hulkitten",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right bottom"
      ],
      "additional_backgrounds_tiling": [
        "no-repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(208, 117, 23)",
      "toolbar_text": "rgb(234, 222, 25)",
      "frame": "rgb(0, 0, 0)",
      "tab_background_text": "rgb(177, 248, 209)",
      "toolbar_field": "rgb(103, 75, 235)",
      "toolbar_field_text": "rgb(235, 234, 46)",
      "tab_line": "rgb(71, 152, 63)",
      "popup": "rgb(227, 245, 245)",
      "popup_text": "rgb(46, 38, 30)",
      "button_background_active": "rgb(64, 39, 188)",
      "button_background_hover": "rgb(114, 92, 220)",
      "frame_inactive": "rgb(46, 80, 42)",
      "icons_attention": "rgb(205, 34, 76)",
      "icons": "rgb(177, 248, 209)",
      "ntp_background": "rgb(177, 248, 209)",
      "ntp_text": "rgb(54, 54, 42)",
      "popup_border": "rgb(54, 223, 38)",
      "popup_highlight": "rgb(14, 129, 16)",
      "sidebar_border": "rgb(46, 197, 115)",
      "sidebar_highlight_text": "rgb(235, 234, 46)",
      "sidebar_highlight": "rgb(114, 92, 220)",
      "sidebar_text": "rgb(69, 35, 43)",
      "sidebar": "rgb(234, 245, 244)",
      "tab_background_separator": "rgb(241, 241, 42)",
      "tab_loading": "rgb(222, 117, 8)",
      "tab_selected": "rgb(177, 248, 209)",
      "tab_text": "rgb(7, 61, 13)",
      "toolbar_bottom_separator": "rgb(86, 211, 208)",
      "toolbar_field_border_focus": "rgb(203, 212, 30)",
      "toolbar_field_border": "rgb(50, 210, 35)",
      "toolbar_field_focus": "rgba(142, 46, 118, 0.48)",
      "toolbar_field_highlight_text": "rgb(72, 59, 22)",
      "toolbar_field_highlight": "rgb(235, 234, 46)",
      "toolbar_field_separator": "rgb(38, 229, 222)",
      "toolbar_field_text_focus": "rgb(234, 222, 25)",
      "toolbar_top_separator": "rgb(177, 248, 209)",
      "toolbar_vertical_separator": "rgb(46, 38, 30)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{0cae55aa-412e-4ce1-9c8d-7a0f268b2779}"
    }
  }
}