Examine source code of Bubble Fractal

{
  "theme": {
    "images": {
      "theme_frame": "fracy1.0.jpg"
    },
    "colors": {
      "frame": "#b58f1d",
      "tab_background_text": "#5f4efc"
    }
  },
  "version": "2.0",
  "name": "Bubble Fractal",
  "manifest_version": 2,
  "description": "fractal blue yellow green orange purple brown beige black white red gold silver bronze bubble water space nebula abstract fun party pattern"
}