@Override public String toString() {
        return new StringBuilder()
            .append("{\n")
            .append("\"text\":\"").append(getText()).append("\",\n")
            .append("\"startValue\":").append(getStart()).append(",\n")
            .append("\"stopValue\":").append(getStop()).append(",\n")
            .append("\"color\":\"").append(getColor().toString().substring(0,8).replace("0x", "#")).append("\",\n")
            .append("\"highlightColor\":\"").append(getHighlightColor().toString().substring(0,8).replace("0x", "#")).append("\",\n")
            .append("\"textColor\":\"").append(getTextColor().toString().substring(0,8).replace("0x", "#")).append("\"\n")
            .append("}")
            .toString();
    }
Checks if the section contains the given value and fires an event
in case the value "entered" or "left" the section. With this one
can react if a value enters/leaves a specific region in a gauge.
@param VALUE
src/main/java/eu/hansolo/tilesfx/Section.java