Examine source code of ANIMATED Christmas Window

{
  "theme": {
    "images": {
      "theme_frame": "EDITEDXmas-CandlesWindowHeader.apng"
    },
    "colors": {
      "frame": "#52616e",
      "tab_background_text": "#030303"
    }
  },
  "version": "2.0",
  "name": "ANIMATED Christmas Window",
  "manifest_version": 2,
  "description": "Xmas blue white snow snowy warm candles candle flame lights colorful red birds cardinal fir tree snowing green yellow orange scene painting pane view vista soft greenery branches wings animated moving greeting card pretty cozy decorations ornaments gradient winter fire )"
}