Examine source code of Green cosmic

{
  "theme": {
    "images": {
      "theme_frame": "56.jpg"
    },
    "colors": {
      "frame": "#18d9a2",
      "tab_background_text": "#30db8b"
    }
  },
  "version": "2.0",
  "name": "Green cosmic",
  "manifest_version": 2,
  "description": "Hope you like it"
}