Examine source code of Killswitch Engage Red

{
  "theme": {
    "images": {
      "theme_frame": "KSEhead.jpg"
    },
    "colors": {
      "frame": "#ffffff",
      "tab_background_text": "#fcfcfc"
    }
  },
  "version": "2.0",
  "name": "Killswitch Engage Red",
  "manifest_version": 2,
  "description": "Just my modification"
}