The Unofficial Photoshop Color Book File Format Specification
Tuesday, April 18th, 2006Adobe Photoshop’s Color Picker has a Custom Colors dialog that offers a wide variety of colors from several industry-standard color catalogs such as ANPA, DIC, Focoltone and Pantone.

Adobe Photoshop’s Custom Colors Dialog
The color catalog data comes from Adobe Photoshop Color Book files. These file have the .ACB file extension on Windows and reside inside the “…/Presets/Color Book” folder in a typical installation. Read the rest of this entry »