I made an indicator that changes the background color according to the position of RCI for 4 hours.
The colors are switched based on 0% so that if the long is advantageous, it is green, and if the short is advantageous, it is red.
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.