Examine source code of fantacy tree

{
  "theme": {
    "images": {
      "theme_frame": "Background.JPG"
    },
    "colors": {
      "frame": "#00ff51",
      "tab_background_text": "#0004ff"
    }
  },
  "version": "2.0",
  "name": "fantacy tree",
  "manifest_version": 2
}