Examine source code of sixisserious

{
  "theme": {
    "images": {
      "theme_frame": "cfm_six_small.jpg"
    },
    "colors": {
      "frame": "#0303ff",
      "tab_background_text": "#b00000"
    }
  },
  "version": "2.0",
  "name": "sixisserious",
  "manifest_version": 2
}