red blue green red blue green
blue green red blue green red
green red blue green red blue
red blue green red blue green
blue green red blue green red
green red blue green red blue

After-image

stare at this until after-images appear and the colours begin to shift.

After-images appear with eyes open or closed and have always interested me. They played a significant part in my early attempts at meditation: gazing at a daylit window, closing my eyes, watching the after-image fade through a spectrum into dark violet.

One of two early works (1997-9) with simple animated GIFs.