Examine source code of A Future ahead...

{
  "theme": {
    "images": {
      "theme_frame": "persona01_top.jpg"
    },
    "colors": {
      "frame": "#ffffff",
      "tab_background_text": "#c0c0c0"
    }
  },
  "version": "2.0",
  "name": "A Future ahead...",
  "manifest_version": 2,
  "description": "A 3d over dark grey with abstract lighting and features."
}