Examine source code of Sabaton theme

{
  "theme": {
    "images": {
      "theme_frame": "Untitled-1.jpg"
    },
    "colors": {
      "frame": "#adabab",
      "tab_background_text": "#6e6d6d"
    }
  },
  "version": "2.0",
  "name": "Sabaton theme",
  "manifest_version": 2
}