Examine source code of Mr Pumpkinhead

{
  "theme": {
    "images": {
      "theme_frame": "header485.jpg"
    },
    "colors": {
      "frame": "rgba(229,230,232,1)",
      "tab_background_text": "#fb9c66"
    }
  },
  "version": "2.0",
  "name": "Mr Pumpkinhead",
  "manifest_version": 2,
  "description": "Halloween Scarecrow."
}