He followed Rembrandt in his use of red chalk.
The walls of the room were washed with blue; the one facing the bed had a lewd picture on it, done in red chalk.
The portrait is drawn in red chalk on paper.
Leonardo's face is best known from a drawing in red chalk that appears to be a self-portrait.
With red chalk he drew three dramatic lines leading away from the Platte.
He crossed out the side drum in red chalk and half the percussion instruments too.
He also drew sketches of his own in red chalk.
The portrait is drawn in black and red chalk with white heightening on brown wash paper.
But his innovative layering of red and black chalk, eventually to be augmented by white, is already in place.
His drawings are usually executed in black and red chalk, sometimes with the addition of blue or yellow gouache.
