The Heat Map overlay allows you to see specific elevation ranges based on color:
To turn on this overlay tap on the bottom right folded map icon:
If it’s already in your Map Details, tap to enable:
Otherwise, scroll down and tap Add More Overlays:
Tap on Elevation & Slope, then select Elevation Heat Map.
Once you’ve added it there, exit this screen back to the main dashboard where you can configure your colors:
Here you can customize the colors as well as toggle on the gradient fill, and add any more elevations you might need.
This is what it looks like with a little hill shading added and toggling on the gradient fill between levels:
