The person who invented 47 shades of blue deserves an explanation. So does whoever decided artists need twelve different kinds of paper that all look identical until they actually touch them.
Art supplies get weird very quickly, especially once a tiny project turns into a question about texture, pigment, weight, finish, and whether that particular blue is “too blue.” This Indiana art store lives comfortably in that world. Paint lines have swatches.
Markers have test strips. Brushes cover the walls…