Examine source code of kropka

{
  "theme": {
    "images": {
      "theme_frame": "krop.PNG"
    },
    "colors": {
      "frame": "#2129c4",
      "tab_background_text": "#c22d2d"
    }
  },
  "version": "2.0",
  "name": "kropka",
  "manifest_version": 2,
  "description": "brak opisu"
}