Saw this on a wall by the River Stort, Herts./Essex border (UK) -- there was a metal mesh fence in front but by using my 180mm lens at a wide aperture I put it out of focus and it vanished ! I used my A24 back loaded with 2003 dated Kodak Portra 400 VC film size 220 I got off e-bay cheap and downrated it as it was outdated, and processed it myself in C41 -- I did a 'saturation' increase on the scan of the negative.