Those speckles I am pretty sure are on all of my kindles. That is the backround. Now I can never see that because the closer my nose goes to a object, the blurrier it gets.
. I also cannot look closely at my Oasis with its light at full blast without blinding myself, so I have no way to look that specific.
But I have noticed the speckled backround in all my e-ink kindles when squinting at them really really hard.
I can't see much on the pictures other than the speckles on the first one. I assume that is how mine look like that large, I wouldn't know, I can't see my Oasis this zoomed in.