[krsrhe]

The picture is gray, but the actual shoes are pink, but bathed in green light. Some people sometimes can mentally remove the green lighting.

[dsr_]

To do this properly, then, they should use video instead of stills.

Have a nice white background. White socks, pink shoes. Slowly move a green spotlight across the scene.

[drdec]

This is what I don't understand. I thought the socks were green, not white in green light, and still thought the shoes were pink.