Examine source code of Lubuntu - Lightness

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#ffffff",
      "tab_background_text": "#033c72"
    }
  },
  "version": "2.0",
  "name": "Lubuntu - Lightness",
  "manifest_version": 2,
  "description": "style crossover to lubuntu.\nlogo owned by wiki dot ubuntu dot com slash Lubuntu slash Marketing\nmatching wallpaper at <a rel=\"nofollow\" href=\"https://outgoing.prod.mozaws.net/v1/0039dc25b854c887ba3208ce57dc19b7c76dbd453d0897116603d1f9fd99727f/https%3A//www.opendesktop.org/p/1175225/\">https://www.opendesktop.org/p/1175225/</a>"
}