Examine source code of Panoramic

{
  "theme": {
    "images": {
      "theme_frame": "panorama.jpg"
    },
    "colors": {
      "frame": "#7a7373",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Panoramic",
  "manifest_version": 2,
  "description": "Alpine panorama from Muotas Muragl, Engadin, Switzerland."
}