I want my document to have only two colors (using CMYK). Let's say black and Cyan. For the Cyan I want to have a tint. Will the following code work or the printshop will tell me that these are more than two colors? (using XelaTeX)
\definecolor{vividcolor}{cmyk}{1,0,0,0}
\definecolor{simplecolor}{cmyk}{0.5,0,0,0}