Examine source code of Watermelon2

{
  "theme": {
    "images": {
      "theme_frame": "header.jpg"
    },
    "colors": {
      "frame": "#ff7b00",
      "tab_background_text": "#0091ff"
    }
  },
  "version": "2.0",
  "name": "Watermelon2",
  "manifest_version": 2,
  "description": "A tasty Persona from Watermelons...\n\nvisit: <a rel=\"nofollow\" href=\"https://outgoing.prod.mozaws.net/v1/48bcecf3de198e86d9f9bea522052a8a29e608acead028e6f90b34e7473e60cd/http%3A//pcstube.wordpress.com\">http://pcstube.wordpress.com</a>"
}