This is a normalized velocity. By default it is using a gradient coloring.
To turn the gradient
coloring off, set the color steps to to less than 2. To set it show the
colors on slope change, set the color steps to 2 and all the above is going to be drawn in different
shades of gradient calculated colors.
The MetaTrader 5 version of RSI of MACD doubleTTM Waves, v. 2.0
One more version that draws the parts when the slope is in accordance with trend.