Examine source code of Dragon Fractal

{
  "theme": {
    "images": {
      "theme_frame": "header_271k.jpg"
    },
    "colors": {
      "frame": "#57a1f0",
      "tab_background_text": "#e5f508"
    }
  },
  "version": "2.0",
  "name": "Dragon Fractal",
  "manifest_version": 2,
  "description": "This is a dragon fractal image I created. I love the intricate image patterns that can be created with mathematics. I love Mandelbrot."
}