Examine source code of Selenium webdriver blue

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "rgba(229,230,232,1)",
      "tab_background_text": "#000"
    }
  },
  "version": "2.0",
  "name": "Selenium webdriver blue",
  "manifest_version": 2,
  "description": "Selenium webdriver is an important component of Selenium testing tool. This theme is inspired by the blue of <a rel=\"nofollow\" href=\"https://outgoing.prod.mozaws.net/v1/5882c1570da3cd2831af12220289a496bdd3b334081c60cd6a96b1b59873921c/http%3A//itelearn.com/\">iTeLearn.com</a>. The dark and bright blue of this website inspired the theme idea of Selenium webdriver blue. Try this theme on your firefox browser and surely you will keep it for long time."
}