I made it in histogram style for more comfortable reading chart:
- green histogram is buy signal or buy opportunity;
- red histogram is sell signal or sell opportunity;
- gray histogram is forward moving from last signal.
In true TradingView spirit, the author of this script has published it open-source, so traders can understand and verify it. Cheers to the author! You may use it for free, but reuse of this code in a publication is governed by House Rules. You can favorite it to use it on a chart.