Examine source code of Green blue black

{
  "theme": {
    "images": {
      "theme_frame": "Untitled-1.jpg"
    },
    "colors": {
      "frame": "#524f4f",
      "tab_background_text": "#6cbec7"
    }
  },
  "version": "2.0",
  "name": "Green blue black",
  "manifest_version": 2,
  "description": "Just something I did to match the theme on my computer."
}