Examine source code of The D-Day

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#000000",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "The D-Day",
  "manifest_version": 2,
  "description": "D Day was one of the bloodiest battles on record. Many gave their lives for a small piece of property that the Germans at the time controlled. This theme shows the massive run just prior to when all hell broke loose."
}