I had been working late at a customer of ours and was walking through an underpass below the railway track on Skøyen in Oslo, Norway when I spotted this little curious effect on one of the concrete walls. On one wall there was a lot of graffiti and text, on the opposite wall there was a hole letting through the yellow light from the streetlights nearby. The light created a spotlight effect on the wall with all the graffiti. One word lit up, and the contrast was so hard that most other “art” was hidden in the dark.