BBCNEWS Kirsty Wark Meets Artist... June 6, 2021 11:42:00
At the same time, there was a reflection from the cliff above, which was glowing with green grass and yellowy flowers. and reflections from the sky and these mixtures of all colours you could perceive layering one upon another in this way, they also generated, which was extraordinary, an after—image. a collective after—image of red, which dotted round in your eyesight, looking at it, and it was colour being faceted, so to speak. and so that was it.
Source: archive.org