Examine source code of Hotnesss

{
  "theme": {
    "images": {
      "theme_frame": "Untitled-1.jpg"
    },
    "colors": {
      "frame": "#525151",
      "tab_background_text": "#302f2f"
    }
  },
  "version": "2.0",
  "name": "Hotnesss",
  "manifest_version": 2,
  "description": "color pencils"
}