How to achieve this effect?

[destron]

Hey, I've tried to get this in photoshop, but can't nail it... Does anybody know how to do it?

[prudat]

It looks like a cloud filter which the person used the square selection tool to random, adjust the color and/or saturation of at various sizes and locations. Maybe another cloud on top set to screen to give the color variation.

If you are looking for a quick way to make a similar effect create a diference cloud. Use the mosaic and/or patchwork filters. tint to desired look with hue/saturation and put another cloud on a layer above set to screen for the color variation. I was able to create a similar look in 30 seconds.

[destron]

Sounds good. I'll try that. Thanks, Prudat.