Examine source code of slackware 4ever

{
  "theme": {
    "images": {
      "theme_frame": "superior.jpeg"
    },
    "colors": {
      "frame": "#919191",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "slackware 4ever",
  "manifest_version": 2,
  "description": "Slackware Linux"
}