Examine source code of Clearing Storm

{
  "theme": {
    "images": {
      "theme_frame": "ClearingStorm-header.jpg"
    },
    "colors": {
      "frame": "#660066",
      "tab_background_text": "#330033"
    }
  },
  "version": "2.0",
  "name": "Clearing Storm",
  "manifest_version": 2,
  "description": "Fading storm at sunset. "
}