I spent all day Wednesday surrounded by fog in San Francisco so, in the wee hours of Thursday, when I tried to recreate a plump, fluffy, accurate-to-nature cloud I had painted in 1978, this came out instead. Celebrating the rediscovery that purple and umber are the perfect tones to shade a cloud! You'd expect to need grey or black, but no it's purple and umber! Oil pastels on tiny notepad paper of the Cova Hotel, downtown San Francisco, USA.
Update: A bit of a thought experiment. "Every silver lining has a cloud." [Quote from Avon, "Blake's 7".] Created by attaching a torn Ingres paper cloud to my hotel window, complete with a silver lining made with a tinsel pipe-cleaner:
No more baked beans for you! Oil pastels on Ingres paper: