Applying Duotones to Data
The ability to tint black-and-white photographs with color has been a staple of photography for decades, and modern image editors make warming and cooling grayscale images a snap. This concept of a steady progression of shades can be used to present information as well.
This technique of tinting digital photos works well for presenting information and can improve usability. Just as a gradient shows a range of colors, a monotone or duotone can be used to show a range of data.
