Examine source code of Tux Shell

{
  "theme": {
    "images": {
      "theme_frame": "unix_personas_header.jpg"
    },
    "colors": {
      "frame": "#ebc3c3",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Tux Shell",
  "manifest_version": 2,
  "description": "This is the Tux Unix Shell."
}