Box color is determined by price in relation to the box position. Box color is set at the start of the next session. This allows
user to lookback at multiple box sets to see how each day closed in relation to the session highlighted.
I have written this for backtesting purposes and intend to expand it to use with volume analysis and gradient color to change the box color based on how many times price tests
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.