got strange...and I dug it the most!!

Sending around!

It helps if you don't blink, don't move your eyes, and relax.

I wonder if it is the eyes' fatigue.

We get so accustomed to it, it can seem downright creepy when we suddenly notice one of our eyes, usually not both, is looking right at that beak!
It can almost startle a person.

Thank you, very much, forgotmylogin.

But I agree it is startling. I've noticed that the only time I see my nose is on the rare occasion there's a stray hair or eyelash stuck on it that changes its usual, unseen form!

and I did focus on the correct image.

Scroll down 3 paragraphs and it will appear again, but with a tiny dot in the interior, about the size of a pencil dot, like a period.

Hope it will work for you.

to change anything about the color.

Maybe that has something to do with it?

That includes the tiny, nearly involuntary eye twitches called "saccades" (as I know now from the article!)...if your eyes move even a fraction, the colors won't disappear.

If you're in any way stressed or having issues at all with your eyes, it might be hard to do that. It reminds me of when I used to spin in an office chair for fun as a kid, or when you look out the side window of a moving car at close trees or scenery: if your eyes try to focus on everything that passes sideways, you will become dizzy and disoriented and possibly ill; if you can relax your eyes and let everything whoosh past in a blur without them trying to focus and pick anything out, you won't get as disoriented or ill.

I found it was a little easier with one eye closed; at monitor distance, my eyes felt like they were crossing and wanted to each take turns focusing singly on the dot, which causes eye movement. If that doesn't work, perhaps try moving a little farther away so your eyes can both focus on the dot without difficulty. Be patient, relax and breathe, and let all the muscles in your eyelids relax also. It might be more comfortable to let them naturally close a little more than normal like you are sleepy which removes any extra pull that will stimulate and move your eyeball muscles.

It's very subtle, but quite startling when it happens. The first time it does, your eyes will probably reflexively move and the color will return.

Like an acid trip -- not that I've ever been.

I recently bought a keyboard that lights up blue, but the cracks between the keys also light up. When the keyboard is on the lower pull-out drawer and I am looking at my monitor so the blue lights are in my lower peripheral vision, the lit lines pulse a little bit distractingly as my eyes naturally move while reading text. I'd suppose it's this same phenomenon for the illusion where the blue lights are hitting new parts of my retina that haven't had a chance to fade them out yet.

Interesting thing: The first time I tried it, only the left half faded away. However, all subsequent tries have yielded the promised result.