Examine source code of Frozen Glass 2

{
  "theme": {
    "images": {
      "theme_frame": "frozenglassheader.jpg"
    },
    "colors": {
      "frame": "#0707e0",
      "tab_background_text": "#f5f0f0"
    }
  },
  "version": "2.0",
  "name": "Frozen Glass 2",
  "manifest_version": 2,
  "description": "Photo of a frozen window pane"
}