The depth of clouds

Who sits in judgment when
The sky turns dark, clouds so
Rich in blackness and texture
As to invite a pad and ink to 
Navigate its appearance. You
Need to document what you
See when the billowing clouds
Burst through with a charcoal 
So brilliant as to shape your
Vision and leave an outline in
Your memory. The sky wants
Nothing more than to write a
Commentary on contrast and 
To commemorate the evening.
Clouds substantial, shadowy
Wispy, solid float overhead,
The contrasts made real and
Solid in dusk turning to night