Examine source code of Sand Patterns

{
  "theme": {
    "images": {
      "theme_frame": "Sand_pattern1_top.jpg"
    },
    "colors": {
      "frame": "#c9c9c9",
      "tab_background_text": "#333333"
    }
  },
  "version": "2.0",
  "name": "Sand Patterns",
  "manifest_version": 2,
  "description": "Sand waves created by the wind forming patterns on a sandy beach in Poland."
}