Examine source code of Chrome Earth 4

{
  "theme": {
    "images": {
      "theme_frame": "ChromeEarth4.jpg"
    },
    "colors": {
      "frame": "#140101",
      "tab_background_text": "#f5f0f0"
    }
  },
  "version": "2.0",
  "name": "Chrome Earth 4",
  "manifest_version": 2,
  "description": "A 4th chrome earth on the sea, made in Bryce.\nSee more illustrations and animations from PeakPixels on YouTube."
}