The green zone is the price between the 50 EMA and the 50 MA.
The orange zone is the price between the 100 EMA and the 100 MA.
The red zone is the price between the 200 EMA and the 200 MA.
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.