public void setSecondColor(final Color COLOR) {
        if (null == secondColor) {
            _secondColor = COLOR;
            fireTileEvent(REDRAW_EVENT);
        } else {
            if (!secondColor.isBound()) {
                secondColor.set(COLOR);
            }
        }
    }
Defines the color that will be used to colorize the second hand of the clock
@param COLOR
src/main/java/eu/hansolo/tilesfx/Tile.java