Examine source code of noble and gentle

{
  "theme": {
    "images": {
      "theme_frame": "kugel.jpg"
    },
    "colors": {
      "frame": "#0a0101",
      "tab_background_text": "#f7f4cd"
    }
  },
  "version": "2.0",
  "name": "noble and gentle",
  "manifest_version": 2,
  "description": "noble and gentle Christmas balls"
}