Examine source code of Catch the fish!

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#03134d",
      "tab_background_text": "#7ef2f0"
    }
  },
  "version": "2.0",
  "name": "Catch the fish!",
  "manifest_version": 2,
  "description": "Nanase Haruka and Tachibana Makoto\nFree! episode 9 end card\n(C) Ouji Kouji-Kyoto Animation/Iwatobi Swimming Club\nIllustration by Nishiya Futoshi."
}