Examine source code of Aston Racing Green

{
  "theme": {
    "images": {
      "theme_frame": "Astonhead.jpg"
    },
    "colors": {
      "frame": "#c7c3c3",
      "tab_background_text": "#40e3e6"
    }
  },
  "version": "2.0",
  "name": "Aston Racing Green",
  "manifest_version": 2,
  "description": "British Racing Green Aston on bright abstract backdrop with sky blue text.\nEnjoy."
}