Examine source code of Alien Leaders

{
  "theme": {
    "images": {
      "theme_frame": "alien_landing_header.jpg"
    },
    "colors": {
      "frame": "#8ff0ff",
      "tab_background_text": "#c20000"
    }
  },
  "version": "2.0",
  "name": "Alien Leaders",
  "manifest_version": 2,
  "description": "I created this for my interest in extraterrestrial beings, enjoy."
}