Examine source code of Noctua

{
  "name": "Noctua",
  "manifest_version": 2,
  "version": "2.2.2",
  "icons": {
    "48": "icon48.png",
    "96": "icon96.png"
  },
  "theme": {
    "images": {
      "theme_frame": "uwu.png"
    },
    "colors": {
      "frame": "rgba(231, 206, 181, 1)",
      "tab_background_text": "rgba(101, 48, 36, 1)",
      "toolbar": "rgba(101, 48, 36, 1)",
      "bookmark_text": "rgba(231, 206, 181, 1)",
      "toolbar_field": "rgba(231, 206, 181, 1)",
      "toolbar_field_text": "rgba(101, 48, 36, 1)",
      "tab_text": "rgba(231, 206, 181, 1)",
      "tab_line": "rgba(101, 48, 36, 1)",
      "tab_loading": "rgba(231, 206, 181, 1)",
      "toolbar_top_separator": "rgba(101, 48, 36, 1)",
      "toolbar_bottom_separator": "rgba(101, 48, 36, 1)",
      "toolbar_vertical_separator": "rgba(101, 48, 36, 1)",
      "toolbar_field_focus": "rgba(231, 206, 181, 1)",
      "toolbar_field_text_focus": "rgba(101, 48, 36, 1)",
      "toolbar_field_border_focus": "rgba(101, 48, 36, 1)",
      "toolbar_text": "rgba(231, 206, 181, 1)",
      "popup": "rgba(231, 206, 181, 1)",
      "popup_text": "rgba(101, 48, 36, 1)",
      "popup_border": "rgba(101, 48, 36, 1)",
      "popup_highlight": "rgba(101, 48, 36, 1)",
      "popup_highlight_text": "rgba(231, 206, 181, 1)",
      "sidebar": "rgba(231, 206, 181, 1)",
      "sidebar_text": "rgba(101, 48, 36, 1)",
      "sidebar_border": "rgba(101, 48, 36, 1)",
      "sidebar_highlight": "rgba(101, 48, 36, 1)",
      "sidebar_highlight_text": "rgba(231, 206, 181, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{1a289379-8ec5-449c-ba99-9df793d0ad23}"
    }
  }
}