What about colored text?

Minute misalignment can cause the 4 separate CMYK inks to not line up perfectly in small text (14pt or smaller), as well as in white text on a colored or black background (knock-out text). This misalignment can make small text look blurry. If you need to do this anyway, it is best to keep the colored text one of the true CMYK colors; black is always an excellent choice.