Examine source code of Nature Scene (Animated)

{
  "name": "Nature Scene (Animated)",
  "manifest_version": 2,
  "version": "3.0",
  "theme": {
    "images": {
      "theme_frame": "Banner.png"
    },
    "colors": {
      "frame": "rgba(0, 0, 0, 1)",
      "tab_background_text": "rgba(135, 186, 237, 1)",
      "toolbar": "rgba(0, 0, 0, 0.45)",
      "bookmark_text": "rgba(219, 182, 94, 1)",
      "toolbar_field": "rgba(59, 66, 50, 1)",
      "toolbar_field_text": "rgba(219, 177, 94, 1)",
      "tab_line": "rgba(219, 177, 94, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{7b883a36-6675-4a81-8bc8-a2a5cc8f2ee1}"
    }
  }
}