(can't reply bug again.)
I spot some widget.dark_theme for that layout selector or whatever that is. Do you have that <style> element on all pages or only on dashboard? Same for the iframe.
It just feels like some hacky way of trying to do dark mode where dark mode is not possible. I am not versed enough in css to understand what that iframe does. It is just strange that I do not have both elements at all.
Oh, and dark mode from within Itch's settings works just fine on my system.
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So the iframe might be an inactive icon, as it says on the tin. It might be unrelated to the greyness.
For the greyness, if it is on mobile too and the Itch app, that is very strange. Also, because it is in the body and not in the css file.