Examine source code of Digital Thinker

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#000000",
      "tab_background_text": "#00e1ff"
    }
  },
  "version": "2.0",
  "name": "Digital Thinker",
  "manifest_version": 2,
  "description": "An imaginary creation that serves no purpose at all except to be the background on your browser."
}