Examine source code of Dont Panic Starfield

{
  "theme": {
    "images": {
      "theme_frame": "DontPanic.png"
    },
    "colors": {
      "frame": "#c90000",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Dont Panic Starfield",
  "manifest_version": 2,
  "description": "Some of the most simple and logical advice ever to be put to paper, by the brilliant author Douglas Adams. Don't Panic."
}