for measuring overbought and oversold levels. The scale ranges from 0 to -100 with readings from 0 to -20 considered overbought,
and readings from -80 to -100 considered oversold. Typically, is calculated using 14 periods and can be used on intraday,
daily, weekly or monthly data.
This implementation is enhanced with in the form of background colors as a confirming signal and an indication of a prevailing trend.