ArcGIS Online map selection color in Dashboards and Experience Builder

[DarrenLloyd__DOIT_]

When a Dashboard or Experience Builder selection is made in a map the highlight color is transparent. Is there a way to make a “transparent or not” choice when picking a map selection color?  We investigated our options, and the only way is to host the app outside of ArcGIS Online and customize the code, which isn’t a realistic option for us.

[Waffle_House]

I don't think you can change this, unfortunately. Cyan only!