Hey, guys.
That is what i needed to animate Sprites color for. Lightning!
Enjoy

cool effect but it's very fps gluttonous :p

any alternative sloutions?

I tried to make it using texture 'difference cloud over gradient' method, but the perlin texture or 'diff' blending mode work different from photoshop.
Of course, I could have imported the lightning texture mask and animate the filling color/texture, but it would have been a cheap trick

a lightning cloud.

A nice idea there, mate!
On the other hand, I think we need more noise types inside wz.
Perlin doesn't seem to do the job right for ADF clouds...

noise script formula ?

....probably, if I can guess what you mean. I would use C4D as a reference: http://d2d04grx5ahzvh.cloudfront.net/00 ... e%20v1.pdf
It has a whole bunch of noise textures in store. A quality turbulence noise pattern is what's needed to simulate clouds. As I can see, Perlin distorted by another Perlin is not capable of real quality turbulence...