Examine source code of Osprey

{
  "theme": {
    "images": {
      "theme_frame": "ospreyheader_original_by_pyslexic.png"
    },
    "colors": {
      "frame": "#7d7b7b",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Osprey",
  "manifest_version": 2,
  "description": "Osprey or Sea Hawk, aka the masked raptor.\n\nThe original images were made available under the GNU license by Pyslexic (header) and Mike Baird (footer)."
}