private void updateToday() {
        final UTCDate today = model.getTodayUTC();
        if (!Objects.equals(this.today, today)) {
            if (this.today != null) {
                removeStyleFromDates(css().dayIsToday(), this.today);
            }
            addStyleToDates(css().dayIsToday(), today);
            this.today = today;
        }
    }
Refreshes all components of this date picker.
stroom-core-client-widget/src/main/java/stroom/widget/datepicker/client/CustomDatePicker.java