Examine source code of Bears at play

{
  "theme": {
    "images": {
      "theme_frame": "Bearshead.jpg"
    },
    "colors": {
      "frame": "#bdb6b6",
      "tab_background_text": "#5d874e"
    }
  },
  "version": "2.0",
  "name": "Bears at play",
  "manifest_version": 2,
  "description": "Bears playing on dark backdrop with light green text.\nEnjoy."
}