I feel sometimes the walls move

[Mad Doug Biker]

I love those optical illusions, but boy, what a truly shocking taste in wallpaper!!

 

[NormanD]

Wow, they are all mad!!! So, if you cant see something what would it mean?? (Not me, I get them all)

It means you have to open your eyes to view them

 

[ianrauk]

The first one is great - I can't see anything special in the second one, but I'm quite badly colour-blind

The yellow spots turn blue.. can't you see it?

 

[ianrauk]

No, just a circle of blue(?) spots in a circle which change one at a time to yellow(?)

lol, sorry Morty ol' chum I was trying to be funny.. forgot the winky smiley.
They are pink turning to green.