But, sometimes, a little cloud changes the perspective.

The gray cloud changed color; now it was a dull red.

Some purple cloud came down and changed him before I could get around to it.

The noise died out; the cloud changed from incandescent to opaque.

Hiro can see the clouds change shape if he watches them long enough.

It formed a soft, puffy looking material and the entire cloud changed into an almost cylindrical shape.

A few seconds later her face had gone, as the cloud changed shape then disappeared.

High, puffy little clouds do not change until a lot of moisture is added.

Again the light cloud passed across the picture, and again the subject changed.

No one had a good sense of how clouds might change in any given scenario.