Examine source code of Alone at night

{
  "theme": {
    "images": {
      "theme_frame": "dark10.jpg"
    },
    "colors": {
      "frame": "#000000",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Alone at night",
  "manifest_version": 2,
  "description": "Gothic roses clock black spider web woman man tree sexy silent night moon sky old scary Halloween fog foggy dark rose clouds shadows teeth fangs vampire creepy lonely sad darkness Real.Twilight"
}