Examine source code of nova space

{
  "theme": {
    "images": {
      "theme_frame": "nova_persona_head.jpg"
    },
    "colors": {
      "frame": "rgba(229,230,232,1)",
      "tab_background_text": "#392e96"
    }
  },
  "version": "2.0",
  "name": "nova space",
  "manifest_version": 2,
  "description": "like floating in time and space through the internet ;)"
}