Examine source code of Key Free Design

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#f0f0f0",
      "tab_background_text": "#ff00fb"
    }
  },
  "version": "2.0",
  "name": "Key Free Design",
  "manifest_version": 2,
  "description": "Self-service Car Rental Technology and other like On-demand Car Rental Technology and Peer-to-peer Car Sharing Technology."
}