Examine source code of The web is mine ...

{
  "theme": {
    "images": {
      "theme_frame": "ThewebismineHeader.jpg"
    },
    "colors": {
      "frame": "#16385e",
      "tab_background_text": "#16385e"
    }
  },
  "version": "2.0",
  "name": "The web is mine ...",
  "manifest_version": 2,
  "description": "Hatsune Miku and her computer hard at work."
}