Examine source code of Humpback

{
  "theme": {
    "images": {
      "theme_frame": "humpback_persona.jpg"
    },
    "colors": {
      "frame": "#000000",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "Humpback",
  "manifest_version": 2,
  "description": "Humpback I photographed near Monterey Bay, Ca.  The whales that were actually coming completely out of the water, but my camera was not fast enough to capture those images."
}