Originally Posted by Lisa
With 4 colours you can generate multitudes of other colours. Look at your average ink jet printer, you have 4 colours, Black, Cyan, Yellow and Magenta. with those colours you can make other colours.
you're right, but I think he's talking about the lower priced printers that don't do CMYK. CMYK have different color "Plates" that print one over top of the other...(image)
to make different hues and values and colors and shiny buttons... and ... sorry... got sidetracked there.
Anyway, my point is CMYK printing (from a proper printer, not a home job) is rather expensive. 4 color printing is a cheap alternative to having a black and white label.
That being said...
I vote for Phrozen's entry.