Examine source code of Blue in red

{
  "theme": {
    "images": {
      "theme_frame": "blueinreddiffused.jpg"
    },
    "colors": {
      "frame": "#9dd4ae",
      "tab_background_text": "#fcf9f9"
    }
  },
  "version": "2.0",
  "name": "Blue in red",
  "manifest_version": 2,
  "description": "self made fractal"
}