Examine source code of Cockpit Historical

{
  "theme": {
    "images": {
      "theme_frame": "CKPT.jpeg"
    },
    "colors": {
      "frame": "#bab6b6",
      "tab_background_text": "#262626"
    }
  },
  "version": "2.0",
  "name": "Cockpit Historical",
  "manifest_version": 2,
  "description": "Kokpit ruského letounu v barvách historické černo-bíle fotografie. Serie historických person letounu venovaná pilotum. Russian plane ockpit in historical photo collors. Historic aviation personas dedicated to pilots."
}