Examine source code of SupernaturalHeader

{
  "theme": {
    "images": {
      "theme_frame": "spn-hdr.JPG"
    },
    "colors": {
      "frame": "#f50a0a",
      "tab_background_text": "#f7f4f4"
    }
  },
  "version": "2.0",
  "name": "SupernaturalHeader",
  "manifest_version": 2,
  "description": "superatural, dean winchester, sam winchester, castiel, jensen ackles, jared padalecki, misha collins"
}