Your Ad Explained
Your Advert Matter printed in black colour = one colour overprint
 
Your Advert Matter printed in black and blue colour = two colour overprint
Advertisement in Black and Blue Colour = Two Colour
 
Your Advert Matter printed in black, red and blue colour = three colour overprint
Advertisement in Black, Red and Blue Colour = Three Colour
 
Your Advert Matter printed in full colour = four process colour overprint
Full Colour = Four Process Colour