Examine source code of Kronos gray

{
  "theme": {
    "images": {
      "theme_frame": "Persona_Header_KRONOS3.jpg"
    },
    "colors": {
      "frame": "#ffffff",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "Kronos gray",
  "manifest_version": 2,
  "description": "Kronos Technologies is a company specialized in the development of Web applications and other web-based products."
}