I don't do much printing, but from what I understand the first ink everyone always runs out of is black, unless they do mostly photos. Makes sense, I'm pretty sure every contract, document, etc I've had to sign or print out has been black and white with the exception of maybe a one inch square color company logo or something of the sort.
What if I changed the color of my text before I printed it though, to say brown, which I believe would use all of the colors in the cartridge. A dark blue maybe. What colors could I use to get the most out of my ink ?