Painting requires you to think about many things, and one of them is color. Learning to accurately observe color will translate into more efficient painting. The less time you spend re-painting the same area of yor canvas searching for the perfect color, the quicker you will be able to finish the work and move onto another. This video offers a color drill which is all about careful observation. How close can you get? Reader Aaron M. reminded me of a fantastic follow-up: The Munsel Hue Test. This is a fun way to test your hue observation skills. I would love to see scores for both of these games in the comments!