Cloud shader

I need a bit of help on this, I'm just getting into shaders. I'd like a shader that I can use on a particle system to create clouds... Florida clouds, where you get bright white tops and dark gray bottoms because the light doesn't pass through all the water. Basically I want an additive shader that adds to black instead of white (Subtractive). But I'm not sure how to go about doing this.

Jeff

 

Maybe, but the built in Particle/Additive color won't make the clouds darker only tint the color. Additionally I would guess I'd need to make a CloudEmitter to control where the particles are placed vs. EllipsoidEmitter which places randomly?

Jeff

 

So have you had any luck with making clouds?

 

I poked around with it for a bit, but had higher priorities so have dropped it for now. Never came up with anything that was very satisfying.