Examine source code of Dance shadows

{
  "theme": {
    "images": {
      "theme_frame": "all-dance-h.png"
    },
    "colors": {
      "frame": "#000000",
      "tab_background_text": "#33ff33"
    }
  },
  "version": "2.0",
  "name": "Dance shadows",
  "manifest_version": 2,
  "description": "Dancers in silhouette - flamenco, ballet, jazz, lyrical, and cheer"
}