Examine source code of FlyingFonts

{
  "theme": {
    "images": {
      "theme_frame": "flyingfonts.jpg"
    },
    "colors": {
      "frame": "#8ff7a2",
      "tab_background_text": "#1efa2d"
    }
  },
  "version": "2.0",
  "name": "FlyingFonts",
  "manifest_version": 2,
  "description": "From a series of photo-mosaics I made using fonts"
}