Dias,
Yes, strange indeed. When I saw your linked photo, I immediately thought I have seen that before somewhere. I have had another look to see if I can find it, but failed. I think the problem is that before I posted on this forum I did a lot of searching on the internet and now find it impossible to replicate how I found the photo.
The only other possibility may be that someone else has done something similar.
One of lifes many mysteries.
Cheers,
Peter G. Shaw