How do I erase the paint I applied on the landscape?

I painted that area with dirt using the landscape paint tool,

but now I want to change it back to green grass. I don’t know how to erase the paint.

I tried holding Shift while painting to erase, but it doesn’t revert back to grass.

Can you help me?

Heya,
Use the Paint Noise Tool, my editor is still loading but I think it has add, subtract & both in a dropdown menu

It doesn’t seem to work.

The shift-paint should be working too.

Actually that looks a bit dark, see if its the mud layer instead

The problem was that the brush strength was set to 0.01.
Thank you for the kind help!

he he… so easy to overlook