Examine source code of Metallica_Flames

{
  "theme": {
    "images": {
      "theme_frame": "Header_Metallica.jpg"
    },
    "colors": {
      "frame": "#c24242",
      "tab_background_text": "#fcfcfc"
    }
  },
  "version": "2.0",
  "name": "Metallica_Flames",
  "manifest_version": 2,
  "description": "Metallica Design"
}