Examine source code of Witches

{
  "theme": {
    "images": {
      "theme_frame": "Cabecera_Firefox.jpg"
    },
    "colors": {
      "frame": "#ab0000",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Witches",
  "manifest_version": 2,
  "description": "Just for fun~\nMy OCs~"
}