Examine source code of freemind2

{
  "theme": {
    "images": {
      "theme_frame": "free.jpg"
    },
    "colors": {
      "frame": "#f76b6b",
      "tab_background_text": "#edf2f1"
    }
  },
  "version": "2.0",
  "name": "freemind2",
  "manifest_version": 2,
  "description": "team work"
}