Certiport ACA Photoshop Certification Practice Test 2026 - Free Photoshop Certification Practice Questions and Study Guide

Color mode is a global setting that determines how colors are represented in your document, and you change it from the Image menu under Mode. In Photoshop, you go to Image > Mode and choose options like RGB Color, CMYK Color, or Grayscale. This is why the option lives in the Image menu—the color model defines the entire image’s color handling, not just individual tools or layers. Other menus don’t house color-mode choices because they control different aspects: Edit handles transformations and edits, Layer affects individual layers, and Window only opens panels. Knowing to use Image > Mode lets you prepare your artwork for the right output—RGB for screens, CMYK for print, etc.—and can also affect color depth and available features.