Examine source code of AYU DARK CUSTOM

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "AYU DARK CUSTOM",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "toolbar": "rgba(13, 20, 25, 0.8)",
      "toolbar_text": "rgb(255, 139, 0)",
      "frame": "rgb(35, 36, 39)",
      "tab_background_text": "rgb(237, 255, 182)",
      "toolbar_field": "rgba(0, 0, 0, 0.2)",
      "toolbar_field_text": "rgb(232, 255, 137)",
      "tab_line": "rgb(255, 105, 0)",
      "popup": "rgba(16, 30, 34, 0.93)",
      "popup_text": "rgb(255, 244, 234)",
      "button_background_active": "rgb(32, 33, 36)",
      "button_background_hover": "rgb(25, 42, 58)",
      "frame_inactive": "rgba(255, 255, 255, 0.93)",
      "icons_attention": "rgb(56, 200, 244)",
      "icons": "rgb(255, 255, 255)",
      "ntp_background": "rgba(86, 56, 124, 0.85)",
      "popup_border": "rgb(255, 155, 3)",
      "popup_highlight_text": "rgb(255, 255, 255)",
      "popup_highlight": "rgb(72, 121, 138)",
      "tab_selected": "rgba(21, 29, 42, 0.76)",
      "tab_text": "rgba(255, 255, 255, 0.93)",
      "tab_loading": "rgb(255, 105, 0)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{93fc6ef5-241b-402b-a2fc-7cbc35e291a8}"
    }
  }
}