Om ”liv-&-död-leken” mellan ”blå-orange”… – Konstnären, konstpedagogen, Johannes Ittens poetiska ord om dessa komplementfärger i hans bok ”The Art of Color / The Elements of Color”, 1961: ”The mausoleum of Galla Placidia, now at Ravenna, Italy, ( ”- Eller, Cityvarvet i Göteborg i våra dagar”… – red. anm.) is dominated by a remarkable colored atmosphere of gray light. This effect is produced by bathing the blue mosaic walls of the interior in an orange light, filtered though narrow windows of orange-tinted alabaster.

Orange and blue are complementary colors, the mixing of which yields gray. As the visitor moves about the shrine, he receives different quantities of light, which is alternately accented blue and orange, the walls reflecting these colors at ever changing angles. This interplay gives an impression of suffusion with colors.”