Examine source code of Ubuntu Noble LTS

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Ubuntu Noble LTS",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right bottom"
      ],
      "additional_backgrounds_tiling": [
        "no-repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(22, 72, 75, 0)",
      "toolbar_text": "rgba(255, 255, 255, 0.75)",
      "frame": "rgb(38, 0, 25)",
      "tab_background_text": "rgb(181, 84, 138)",
      "toolbar_field": "rgba(169, 169, 169, 0.2)",
      "toolbar_field_text": "rgb(225, 45, 96)",
      "tab_line": "rgb(7, 5, 5)",
      "popup": "rgb(38, 0, 25)",
      "popup_text": "rgb(255, 255, 255)",
      "button_background_active": "rgb(121, 100, 112)",
      "button_background_hover": "rgb(85, 69, 78)",
      "frame_inactive": "rgb(230, 108, 176)",
      "icons_attention": "rgb(223, 15, 74)",
      "icons": "rgb(255, 255, 255)",
      "ntp_background": "rgb(85, 69, 78)",
      "ntp_text": "rgb(255, 255, 255)",
      "popup_border": "rgb(156, 58, 47)",
      "popup_highlight": "rgb(85, 69, 78)",
      "sidebar_border": "rgba(139, 41, 95, 0.75)",
      "sidebar_highlight_text": "rgb(255, 255, 255)",
      "sidebar_highlight": "rgb(156, 58, 47)",
      "sidebar": "rgb(38, 0, 25)",
      "tab_background_separator": "rgb(223, 15, 74)",
      "tab_loading": "rgb(139, 41, 95)",
      "tab_selected": "rgba(139, 41, 95, 0.75)",
      "tab_text": "rgb(255, 255, 255)",
      "toolbar_bottom_separator": "rgb(38, 0, 25)",
      "toolbar_field_border_focus": "rgba(139, 41, 95, 0.75)",
      "toolbar_field_focus": "rgba(121, 100, 112, 0.9)",
      "toolbar_field_highlight": "rgb(230, 108, 176)",
      "toolbar_top_separator": "rgba(223, 15, 74, 0)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{5b78c618-0e1f-4607-8d8e-68947484d0c6}"
    }
  }
}