Examine source code of Cedrick

{
  "theme": {
    "images": {
      "theme_frame": "slipknot_3.jpg"
    },
    "colors": {
      "frame": "#0d0b0b",
      "tab_background_text": "#bf2020"
    }
  },
  "version": "2.0",
  "name": "Cedrick",
  "manifest_version": 2,
  "description": "De Slipknot y Metallica yeah!!"
}