The Rijksmuseum in Amsterdam, the national museum of the Netherlands, has a terrific web site. It is such a cool site! Browse it up. You can learn a lot. Amazingly detailed information. Pick a number, any of the numbers, to reveal a factoid.
HOW DRAWING INVITES AUTHENTIC CONNECTION
In an invitation to slow down and look at the world around you, an illustrator and graphic journalist illustrates how drawing can spark deeply human, authentic connections. She believes drawing is an essential tool to help everyone — young and old — slow down, look closely, and connect with one another.
Red is one of the oldest colors still in use. For example, artists continue to use red ochre, which was originally used for prehistoric cave drawings. The pigment is made from clay that turns red after being mixed with a mineral.
A deep red ochre called sinopia — named for the ancient Greek city where it was mined — became a valuable and expensive pigment representing power and victory. Women in ancient Egypt used sinopia in makeup. During the Renaissance, Leonardo da Vinci, Rembrandt van Rijn, and many other artists used it. It also is still in use today.