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 ...
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 ...
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, ...