Examine source code of Silly Walks

{
  "theme": {
    "images": {
      "theme_frame": "Silly_walks.png"
    },
    "colors": {
      "frame": "#4f4a4a",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "Silly Walks",
  "manifest_version": 2,
  "description": "John Cleese and Monty Pythons Silly Walks"
}