Examine source code of wolf-eye

{
  "theme": {
    "images": {
      "theme_frame": "wolfeye.jpg"
    },
    "colors": {
      "frame": "#877c7f",
      "tab_background_text": "#f1effc"
    }
  },
  "version": "2.0",
  "name": "wolf-eye",
  "manifest_version": 2,
  "description": "un dibujo de un lobo, hay caray como estoy inspirado que lo disfruten...\n\na drawing of a wolf, I'm inspired to enjoy it..."
}