The predominant technique, for its warmth and for its frequency of use, is the tinta plana - the plane or block color – either combined with black lines forming an outline in a sort of two-color method (as occurs on one of the horses), or emphasized with engraved lines which define details (this can be seen on various hinds), or enclosed, with scraffito in the rock to add chiaroscuro textures, as happens with a hind painted in red. Three of the horses and the head of another are black, the square sign is yellow, and the remainder of the figures are red.