I'm trying to find a program that will enable me to use our current color system (1320 colors) but will also allow me to view other color systems - does this program do that?
There is brief information related to the application, but according to the official information, you can select from up to 1,696 colors. It doesn't specify if it supports adding your own colors, but the number of colors it supports should match the ones you already have.
Since the product can't be tested, the only way is to contact the developers of the application: http://www.dunn-edwards.com/PaintingContractors/ExploreColor/ColorTools/PalettePreviewer.aspx
Note: Click the Contact link to open the Contact form.