Examine source code of Sinking Feeling

{
  "theme": {
    "images": {
      "theme_frame": "SandRipples.jpg"
    },
    "colors": {
      "frame": "#90bfd1",
      "tab_background_text": "#e0f5fc"
    }
  },
  "version": "2.0",
  "name": "Sinking Feeling",
  "manifest_version": 2,
  "description": "Love sinking your toes into the sand? Here's a great way to relive those summer memories..."
}