This script works following: It measures CCI value from -250 to 250 => the lower the value, the darker green candlesticks will be.. it works the same in the opposite direction, but with red color
You can also edit colors of candlesticks and length and source of the CCI indicator
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.