for (TimedRegion region : model.getRegions()) {
String color = getColorForTime(region.getTime(), maxTime);
LatLngBounds regionBounds = region.getBounds();
PatchMarker marker = new PatchMarker(regionBounds);
Style style = marker.getStyle();
style.setProperty("backgroundColor", color);
marker.addStyleName("patch");
// _overlays.add(marker);
_mapOverlayManager.addOverlay(marker, 10, 15);
bounds.extend(regionBounds.getNorthEast());