Examine source code of Halloween macabro

{
  "theme": {
    "images": {
      "theme_frame": "halloweenmacabro.JPG"
    },
    "colors": {
      "frame": "#f70a0a",
      "tab_background_text": "#f70a0a"
    }
  },
  "version": "2.0",
  "name": "Halloween macabro",
  "manifest_version": 2,
  "description": "Halloweem macabro!!!"
}