How do you print in color at a public library?

I need to print out some stuff for school, & my public library allows you to print stuff for free but only in black & white. I notice some kids print in color, I use the same computer but I am pretty sure they just use some code or do a trick to print in color- anyone know how I can? thnx!
You’re right But I really don’t think they’d mind, I’ve offered to pay but they don’t let me. They say they don’t have fees etc…

Stick with what is cheapest for your free printing. But if you insist, go to the control panel, printers and faxes and under setting choose color. But it’s not nice.