Examine source code of SILVER GTR on BLACK

{
  "theme": {
    "images": {
      "theme_frame": "gtr.png"
    },
    "colors": {
      "frame": "#04ff00",
      "tab_background_text": "#d10404"
    }
  },
  "version": "2.0",
  "name": "SILVER GTR on BLACK",
  "manifest_version": 2,
  "description": "Used the Gtr Pic From Wikipedia Figured it was not copyrighted...."
}