need backup 

I would love to see the SEPAL template for viz parameter beeing push to the vanilla GEE Mapping system. If you don't know what to do I would need back-up here: https://issuetracker.google.com/issues/330613465

@dfguerrerom, @cdanielw, @cdanielw, @BuddyVolly, @eriklindquist  😄 