Examine source code of MSN Paint Doodle

{
  "theme": {
    "images": {
      "theme_frame": "MSNPaintDoodleHeader.JPG"
    },
    "colors": {
      "frame": "#f7fcfc",
      "tab_background_text": "#f7fcfc"
    }
  },
  "version": "2.0",
  "name": "MSN Paint Doodle",
  "manifest_version": 2,
  "description": "Playing around with MSN Paint turned into this."
}