Examine source code of Outlook 2013 blue

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#0072c6",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Outlook 2013 blue",
  "manifest_version": 2,
  "description": "The blue color which is used on the <a rel=\"nofollow\" href=\"https://outgoing.prod.mozaws.net/v1/63465610b4fcfe00457744f1400fc46af2a5aa95ac079da2515a8289fd1c2d51/http%3A//outlook.com\">outlook.com</a> website."
}