In both Photoshop 5.x and 6.x, Color Settings are found in the Edit menu (Version 5.x uses two dialog boxes for these settings while version 6.x uses just one). 
In the example shown (Photoshop 6.0) the Color Settings have been modified to use Adobe RGB (1998) as the Working Space for RGB while the CMYK Working Space has been changed to U.S. Web Coated (SWOP). 
Adobe RGB (1998) is one of the standard color Working Space settings in Adobe Photoshop, and is well-suited to work destined for the printed page because its gamut of colors is large enough to accommodate the colors of a typical image, and adequate for conversion to the four-color CMYK space of the printing press. If an ICC profile is available for your specific CMYK press, paper and ink combination, it is most practical to use that profile in the CMYK setting. Lacking a press-specific profile, the SWOP (Specifications Web Offset Publications) profile is good for printing in North America. Other regions have their own press profiles (Eurostandard, Japan Standard, etc.). A variety of these CMYK and RGB Working Space settings can be stored and used by Photoshop. |