We are painting the dining room a deep orange color - moved all the bookcases and the tall cupboard away from the wall, cleaned, prepped, and painted until the gallon was nearly gone. (We'll get more tomorrow and finish another coat.)
Meanwhile, just as an exercise, I decided to see if I could match the paint color by blending layers of watercolor crayon. I was in another room and not looking at the newly-painted walls. Don't know how any of it (sketch or room) will look in daylight, but was pleased when I took the drawing back into the dining room.