It was white and gold when I opened the post. I use dark mode in Lemmy. Then I opened Wikipedia and read about it for a few minutes in light mode. When I came back, the dress was black and blue suddenly.

I can’t usually switch it on command, but it does switch for me.

And as of posting this and looking at Lemmy in dark mode, it’s white and gold again…

…and now it’s blue and brown.