Equiluminant colors: an abstract collage of torn colored paper pieces — red, green, blue and orange — where every color has been chosen at exactly the same lightness value, so the edges between them seem to shimmer and the composition would turn into one flat grey if converted to black and white. No piece is darker or lighter than another, no black, no white paper. Rough torn fibrous edges, slight paper texture, flat even lighting from above. No text, no letters anywhere.