No need to switch between charts anymore. You just need to activate this script and you will have a global view of the current RSI status for your favorite coins. Feel free to edit the source code yourself to add / remove more coins to the scan list.
The transparency will change if the RSI go over the overbuy / oversell zone (default 80/20)
Also, you should display the label names and values on the chart (click on the gear settings at the bottom of your chart > Select "Labels" > Select "Indicator Name label" & "Indicator Last Value Label")