Examine source code of Change123

{
  "theme": {
    "images": {
      "theme_frame": "03.jpg"
    },
    "colors": {
      "frame": "#e4e8a5",
      "tab_background_text": "#d8db1b"
    }
  },
  "version": "2.0",
  "name": "Change123",
  "manifest_version": 2,
  "description": "Heroines of the manga Change123"
}