Examine source code of adammark2009

{
  "theme": {
    "images": {
      "theme_frame": "firefox.png"
    },
    "colors": {
      "frame": "#006600",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "adammark2009",
  "manifest_version": 2,
  "description": "adammark2009, also known as Adam J. Mark, found on such sites as twitter, facebook, and YouTube."
}