Examine source code of Music

{
  "name": "Music",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "Music.jpeg"
    },
    "colors": {
      "frame": "rgba(12, 13, 13, 1)",
      "tab_background_text": "rgba(140, 36, 36, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{f74bbcc8-2ce6-47f6-a2fb-ab65ce120d0b}"
    }
  }
}