Peter, it's ironic that I just got caught in exactly the opposite
direction with "cyan." Ordering gouache, I see in catalog color labelled
"cyan: process blue." My association is to "cyanotype," so wonderfully
archival,& who wouldn't want "process blue"? But when it arrives label
shows LOWEST archival rating (one star) and I probably won't use it.
Moral (& reason I share my chagrin with list): if you drop your guard one
microsecond they get you.......
Judy