 It has also been conjectured that this form of painting emerged in order to emulate the more prestigious medium of wall painting, but the thesis has been elusive of proof.Furthermore, the group of five Huge Lekythoi (c. 70–100 cm high) are covered entirely in white slip, which suggests an imitation of marble lekythoi for funerary purposes.White-ground vase painting often occurred in association with red-figure vase painting.