Examine source code of Nintendo Switch Joy-Con

{
  "name": "Nintendo Switch Joy-Con",
  "manifest_version": 2,
  "version": "2.0",
  "theme": {
    "images": {
      "theme_frame": "transparent.png"
    },
    "colors": {
      "frame": "rgba(0, 195, 227, 1)",
      "tab_background_text": "rgba(38, 38, 38, 1)",
      "toolbar": "rgba(255, 69, 84, 1)",
      "bookmark_text": "rgba(240, 240, 240, 1)",
      "toolbar_field": "rgba(38, 38, 38, 1)",
      "toolbar_field_text": "rgba(240, 240, 240, 1)",
      "tab_line": "rgba(255, 69, 84, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{73a78ccb-4d4e-4be5-8ddb-3c3dc3a4093a}"
    }
  }
}