Examine source code of Dark Theme Revamp - Black

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Dark Theme Revamp - Black",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "toolbar": "rgb(28, 27, 34)",
      "toolbar_text": "rgb(211, 211, 211)",
      "frame": "rgb(0, 0, 0)",
      "tab_background_text": "rgb(198, 198, 198)",
      "toolbar_field": "rgb(40, 40, 40)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgb(138, 0, 2)",
      "popup": "rgb(46, 45, 45)",
      "popup_text": "rgb(255, 255, 255)",
      "icons_attention": "rgb(255, 255, 255)",
      "icons": "rgb(147, 147, 147)",
      "toolbar_bottom_separator": "rgb(0, 0, 0)",
      "toolbar_field_border_focus": "rgb(72, 72, 72)",
      "tab_loading": "rgb(138, 0, 2)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{31c6f262-26cf-4276-8457-be6c0b04a92e}"
    }
  }
}