Examine source code of Lavender Music

{
  "name": "Lavender Music",
  "manifest_version": 2,
  "version": "4.0",
  "theme": {
    "images": {
      "theme_frame": "LavenderMusicH.jpg"
    },
    "colors": {
      "frame": "rgba(180, 169, 177, 1)",
      "tab_background_text": "rgba(255, 255, 255, 1)",
      "toolbar": "rgba(181, 170, 178, 0)",
      "bookmark_text": "rgba(255, 255, 255, 1)",
      "toolbar_field": "rgba(181, 170, 178, 0.08)",
      "toolbar_field_text": "rgba(255, 255, 255, 1)",
      "tab_line": "rgba(0, 0, 0, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{9d099ea9-c9a2-4c5d-9e6a-e1b8d5aa28b4}"
    }
  }
}