Some PMS colors -- for instance, colors used in corporate logos -- are sometimes achieved with offset printing by using a spot color process. It may not be possible to reproduce them using a straight CMYK process like ours. We try our best to match the colors you want, but cannot always guarantee a perfect match. We give you what is known as "pleasing color". Banners are normally meant for viewing from a distance of at least 12 or 15 feet, so print resolution and color matching must sometimes be sacrificed (in a minor way) in the interests of quick turn around and low price. What we can guarantee is that your colors will be vibrant and your photos will look beautiful (assuming your original is good).