The picture arrives after the screen goes blank
Look at the small cross and don't move your eyes. A saturated field holds, then dissolves to grey — and your own visual system floods that grey with the complementary colour that was never on the display. The screen only primes; the artwork is rendered by your retina.
phaseadapt — hold your gaze
predicted afterimagethe opponent hue
beat1
The cycle runs on its own from the moment the page loads — no input needed. Press Space, or tap the field, to release the colour to grey immediately. Each primer adapts to roughly the hue you just hallucinated, so the piece slowly walks the opponent-colour wheel.