if bar up, bar change to orange, >20sma, change yellow.
if bar down, bar change to silver , >20sma, change black.
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.