Examine source code of xubuntu_dark

{
  "theme": {
    "images": {
      "theme_frame": "xubuntu_header.png"
    },
    "colors": {
      "frame": "#d9e807",
      "tab_background_text": "#e9f1f2"
    }
  },
  "version": "2.0",
  "name": "xubuntu_dark",
  "manifest_version": 2,
  "description": "This is a persona to wear on my favorite os"
}