I remember some people were adding color (watercolor or Dr. Martin's Dyes mostly) to the big black and white print porfolios. I remember at least one person telling me that this was the purpose. This either was one intended possible purpose, or people just didn't know what to do with black and white prints, as if they couldn't really be appreciated for what they were (closer to original artwork). The same reaction some have had to Showcases and Essentials at times.