While this is just a static 2d image, it looks like blue is above the screen (for me, for some others it's below, or red is above).
Thanks to comments, here some explanations https://en.wikipedia.org/wiki/Chromostereopsis
Edited: added Wikipedia link
Chromostereopsis. Pretty cool. Actually works on print too but very easy to observe on displays.
Thank you!!
https://en.wikipedia.org/wiki/Chromostereopsis
(Edit: now I see OP already added the link)