public ObjectProperty<Color> minuteTickMarkColorProperty() {
        if (null == minuteTickMarkColor) {
            minuteTickMarkColor  = new ObjectPropertyBase<Color>(_minuteTickMarkColor) {
                @Override protected void invalidated() { fireTileEvent(REDRAW_EVENT); }
                @Override public Object getBean() { return Tile.this; }
                @Override public String getName() { return "minuteTickMarkColor"; }
            };
            _minuteTickMarkColor = null;
        }
        return minuteTickMarkColor;
    }
Defines the color that will be used to colorize the minute tickmarks of the clock.
@param COLOR
src/main/java/eu/hansolo/tilesfx/Tile.java