Colour is one of the areas that causes the most problems in print. Here are some things to be mindful of: Using The Correct Colour Model Regardless of the intended print process—artwork for print should always use the CMYK colour space—not RGB. This means: Artwork source files (e.g. Adobe Illustrator or InDesign) should be set up using the CMYK (Print) Colour Mode. All linked photographic images should also be converted from RGB to CMYK mode, resaved and relinked into your artwork. When you are adding colours into your artwork, make sure these are CMYK based colours. The only exception to this is...
Artwork: Colour