Philostratus the Elder, imagines 1.30
A delicate garment of Lydian fashion, a lad with beard just beginning to grow, Poseidon smiling at him and honouring the lad with a gift of horses – all this shows that it is Pelops the Lydian who has come to the sea in order to invoke Poseidon’s aid against Oenomaüs; since Oenomaüs accepts no son-in-law, but slaying the suitors of Hippodameia he takes pride in their severed members as hunters who have captures game take pride in the heads of bears or lions. And in answer to Pelops’ prayer a golden chariot has come out of the sea, but the horses are of mainland breed, and able to speed over the Aegean with dry axle and light hoof. The task will go off well for Pelops, but let us examine the task of the painter.
It requires no small effort, in my opinion to compose four horses together and not to confuse their several legs one with another, to impart to them high spirits controlled by the bridle, and to hold them still, one at the very moment when he does not want to stand still, another when he wants to paw the ground, a third when he [wants to lift up his head], while the fourth takes delight in the beauty of Pelops and his nostrils are distended as though he were neighing. This too is a clever touch: Poseidon loves the lad and brings him to the cauldron and to Clotho, after which Pelops’ shoulder seemed to shine; and he did not try to divert him from the marriage, since the lad is eager for it, but being content even to touch his hand, he clasps the right hand of Pelops while he counsels him about the race; and already Pelops proudly “breathes Alpheius,” and his look follows the steeds. Charming is his glance and elated because he is proud of the diadem, from which the hair of the lad trickling down like golden sprays of water follows the lines of his forehead, and joins the bright down on his cheeks, and though it falls this way and that, yet it lies gracefully. The hip and breast, and the other parts of the naked body of Pelops which might be mentioned, the painting conceals; a garment covers his arms and even his lower legs. For the Lydians and the upper barbarians, encasing their beauty in such garments, pride themselves on these weavings, when they might pride themselves on their natural form. While the rest of his figure is out of sight and covered, the garment by his left shoulder is artfully neglected in order that its gleam may not be hidden; for the night draws on, and the lad glows with the radiance of his shoulder as does the night with that of the evening star.