Examine source code of Randomization3000

{
  "theme": {
    "images": {
      "theme_frame": "HeaderP.png"
    },
    "colors": {
      "frame": "#966969",
      "tab_background_text": "#17300c"
    }
  },
  "version": "2.0",
  "name": "Randomization3000",
  "manifest_version": 2,
  "description": "Randomized..."
}