Examine source code of Mac Greyish Blue

{
  "theme": {
    "images": {
      "theme_frame": "G_HEADER.png"
    },
    "colors": {
      "frame": "#bfc5c5",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "Mac Greyish Blue",
  "manifest_version": 2,
  "description": "Based on Nissan Nismo by M.T. but without the car and slight tinge of blue kind of soothing Mac theme."
}