Thanks, Terri!
It's been a while, but chances are good that I used plain ol' round Pentels. It might have been the Bunchos, but their color range is pretty much like the Pentels, and I tend to just grab the color that pleases me, no matter the manufacturer.
(As a photographer, I found the demand for technical details – f/stop, speed, etc. – to be a nuisance because I was too busy making the picture to record that stuff. )