Examine source code of FourChannel

{
  "theme": {
    "images": {
      "theme_frame": "header4chan.jpg"
    },
    "colors": {
      "frame": "#001eff",
      "tab_background_text": "#6aff00"
    }
  },
  "version": "2.0",
  "name": "FourChannel",
  "manifest_version": 2,
  "description": "A website that I visit often and many people there would enjoy this."
}