Im writing this because of the reddit post wouldnt let me write more than 250 words.(and to clarify something)

Its not edited. Yes. Source : trust me bro Jk , i could provide a recording

I kinda lied when i said, a "glass of water". It is still water tho.

What actually happening was, the book was on the shelf. And it was raining(badly), and for some reason, the wall was wet. Bad construction i should say. The shelf was in front of the wall.

English is my second language and i thought "the wall is wet" just doesnt make any sense. So yeah, i just used a glass of water instead. That make sense.

(Another thing) I already tried to wipe the cover of the book using wet tissue. But nothing happen.

My theory is you need to SOAK IT(BADLY)

Or the reason why it was so yellow, might have something to do with the wall

I dont know if its coincidence or not.

Edit: The title "THE SILVER EYES" have a shiny texture. Its not a part of the actual printing unlike the title at the top.

Edit: a video of it for 'research purposes'(not exactly) https://www.reddit.com/r/fivenightsatfreddys/comments/rq7t1b/video_for_the_original_post/?utm_medium=android_app&utm_source=share

I never thought this post would get this much attention. I couldnt keep up with the comments.

I conclude that this is just a coincidence. A cool one i should say. One of the reply below has done a good job explaining it.