Examine source code of Reaver Ambush

{
  "theme": {
    "images": {
      "theme_frame": "reaverambush-header.png"
    },
    "colors": {
      "frame": "#000000",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Reaver Ambush",
  "manifest_version": 2,
  "description": "From the film \"Serenity\" based on the cult show \"Firefly,\" relive one of the coolest moments in sci-fi movie history: the Reaver's (accidental) ambush of the Confederate fleet."
}