Examine source code of Walking on the Moon

{
  "theme": {
    "images": {
      "theme_frame": "MoonHeader.png"
    },
    "colors": {
      "frame": "#000000",
      "tab_background_text": "#ababab"
    }
  },
  "version": "2.0",
  "name": "Walking on the Moon",
  "manifest_version": 2,
  "description": "Animation of stars shining by the Moon's surface with an astronaut afloat."
}