Problem printing in color using El Capitan with HP 5740
Our newly purchased HP Officejet 5740 printer will not print in color with El Capitan 10.11.3 and Safari 9.0.1 using a desktop Mac from 2011. Color copies are no problem, so the color cartridge appears to be working fine. HP Help for OS X suggests updating the Media and Quality Menu for the Print in Grayscale option. I don't seem to have the ability to make any updates to Media and Quality. Mysteriously, our old HP 6210 printer recently stopped printing in color, which we had attributed to a printer problem, but now I'm wondering if some change were made in El Capitan.
iMac, OS X El Capitan (10.11.3), Safari 9.0.1