Examine source code of Boba Player

{
  "name": "Boba Player",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "Boba Player.png"
    },
    "colors": {
      "frame": "rgba(255, 208, 225, 1)",
      "tab_background_text": "rgba(32, 201, 145, 1)",
      "toolbar": "rgba(255, 255, 255, 0.43)",
      "bookmark_text": "rgba(230, 37, 143, 1)",
      "toolbar_field": "rgba(255, 255, 255, 0.65)",
      "toolbar_field_text": "rgba(105, 51, 214, 1)",
      "tab_line": "rgba(235, 209, 80, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{cbe2181c-5f60-4df5-86e1-dac6307468bb}"
    }
  }
}