Examine source code of Digital Lightning

{
  "theme": {
    "images": {
      "theme_frame": "lightning_header.png"
    },
    "colors": {
      "frame": "#0e1b43",
      "tab_background_text": "#b2b8e9"
    }
  },
  "version": "2.0",
  "name": "Digital Lightning",
  "manifest_version": 2,
  "description": "A nice all digital lightning bolt, whipped it up in photoshop, I think it looks rather nice."
}