Examine source code of Marina Forever

{
  "theme": {
    "images": {
      "theme_frame": "marina4ever.png"
    },
    "colors": {
      "frame": "#ed1f1f",
      "tab_background_text": "#f7f4f4"
    }
  },
  "version": "2.0",
  "name": "Marina Forever",
  "manifest_version": 2,
  "description": "Marina Forever depicts one of the great British motors.  If you are a Marina Fan I hope you like it!\n\nThe very best of British!"
}