Microsoft Excel gives you a boatload of options for changing the format of color charts. You can change the layout of a chart, then customize that layout to the format you prefer. For example, you can ...
I often use Excel's doughnut chart to track progress, but the static colors always felt limited. So, I figured out how to make it dynamically shift from red to orange to green, complete with a center ...
Two folds from an Astrolin Color Card pamphlet by Établissement Georget Fils Peintures Laquées et Vernis, Chantenay-Lès-Nantes (c. 1906), 6 3/10 x 3 3/4 inches (image courtesy Bibliothèque Forney, ...