As a made up example, say I have a client who really wants a pastel blue paper but a color print on top of the paper.
She knows there's going to be discoloration, but still wants me to go ahead and design something for her.
What methods can I use either in the software I use (photoshop, indesign or illustrator), or when initially planning out the design can I implement where as I can get an accurate representation of how the final piece will look once printed?
Another example: If the paper the customer chooses for printing is off white (or almost ivory) how could I adjust the current color scheme of a design to print more accurately than if I was printing on brilliant white paper?