Examine source code of Everyone. Thank you.

{
  "theme": {
    "images": {
      "theme_frame": "914--01-motonosima-kakusan-orng.jpg"
    },
    "colors": {
      "frame": "#e1f2ea",
      "tab_background_text": "#050000"
    }
  },
  "version": "2.0",
  "name": "Everyone. Thank you.",
  "manifest_version": 2,
  "description": "すべての皆様。ありがとうございます。"
}