Examine source code of Josh Smith Guitar

{
  "name": "Josh Smith Guitar",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "Josh Smith 1.jpg"
    },
    "colors": {
      "frame": "rgba(229, 230, 232, 1)",
      "tab_background_text": "rgba(250, 199, 80, 1)",
      "toolbar": "rgba(54, 54, 54, 0.5)",
      "bookmark_text": "rgba(255, 255, 255, 1)",
      "toolbar_field": "rgba(250, 199, 80, 0.2)",
      "toolbar_field_text": "rgba(250, 199, 80, 1)",
      "tab_line": "rgba(250, 199, 80, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{3a140ee7-178c-4977-ad47-0632cf95fa95}"
    }
  }
}