/**
* Remove the specified zone from the zone picker
*
* @param zone the zone to remove
* @return The zone that was removed
*/
public Zone remove(Zone zone) {
Color color = zone.getPickColor();
int pixelColor = color.getAlpha() + (color.getRGB() << 8);
Zone removed = zoneMap.remove(pixelColor);
zone.setPickColor(null);
return removed;
}
