CDs are reflective silver, not paper white. How may this affect the label print?
When printing CMYK onto CDs we generally recommend that you specify a white base print for a more accurate colour reproduction. Some clients specify a CMYK print without a white base to get a slightly metallic finish. When we quote for 4 colour / CMYK jobs we include the cost of a white base. If you are planning a spot colour design that uses a tint, a white base print gives improved contrast. Not specifying a white base may result in a washed out look. Each design will print differently, and it is difficult to know how a specific design will print in advance. If you are concerned about colour reproduction specifying a white base print will help.