Sometimes you just get lucky.  I was out whale watching with my family in Cape Cod and offhandedly took two pictures of the harbor when the boat came back into port.  The telling part of this picture is looking through the windows in the steeple.  Common stratocumulus clouds.

One of those times I can’t believe I caught the natural depth of color in a photograph.  A combination of stratus, alto cumulus, and cirrostratus clouds.

This is over the Peruvian Amazon. The vellum is the thin cloud in front of the other clouds.  Vellums specifically form around cumulus congestus clouds or the better known rainy form cumulonimbus (thunderhead). Vellums sometimes linger after the storm cloud dissipates.