Excellent image.
Thanks for the TGD. A while ago I was trying to get clouds that looked like they were "Full of rain", I got what I wanted but hadn't tried that combination of settings. There is more structure apparent in your solution.
The radioactive slime goes away if you use colours with less saturation:
Dark grass - RGB < 26, 32, 14 >
Light grass - RGB < 81, 88, 52 >
or similar.