Stochastic OB/OS Zones Heatmap

The code is based on the Stochastic RSI Heatmap, but uses a normal Stochastic instead the Stochastic RSI when calculating "k" for more accuracy. Credit for the idea goes to Indicator-Jones.

The heatmap starts from the oversold (20) / overbought (80) levels respectively. The more oversold / overbought the price, the more intense the color (blue / fuchsia)