GREY+

Viewing on a phone? For best image quality with these hard-edged digital images, switch off data saver.

MUMMY, MY MOUTH TASTES OF METAL

May 2008

Einsteinium/watercolour compound

GRANNY TOOK ONE TOO MANY OF THE SPECIAL BLUE PILLS AFTER LUNCH

May 2008

Purified extract of ultraviolent radiation

TANK TRACKS ON TOBOGGAN TOR

May 2008

The money from the crime paid for the artists' grade ozone

GENTLE SALMON SUNSET OVER BUCKLED GRAPHITE MODERATOR TUBES

May 2008

Decommissioned tubes, some welding, fading sunlight

SEVEN NON-PROBLEMS ROLLED INTO ONE

May 2008

New materials, as yet unknown to your kind

FLYING ABOVE MANHATTAN, WE SAW THE SKYSCRAPERS' AURAS

May 2008

One-way ticket to NY, biometric passport, some medium-force interrogation

ACCELERATED STALL, ALL SOULS PERISHED

May 2008

A young boy with coloring crayons at the controls of Air Force One

LOCAL AIR - SEA INVERSION

May 2008

A stout pair of inverting lenspieces

THAT COLOUR DOESN'T MATCH YOUR EYES

May 2008

Dulux colour chart for spring/summer '72

XECHENIA ISLANDS (BRITISH TERRITORY)

May 2008

Spy satellite composite image

This digital interlude was an exercise in colour manipulation. The combination of grey adjacent to a colour of equal perceived brightness produces a sort of optical illusion in which foreground and background appear to swap back and forth.