It's not a problem to me, just amusing. Probably nothing that could be
done about it on my end anyway.

Here's a screenshot from a webpage that shows upcoming weather...

https://www.flickr.com/photos/275322...in/dateposted/

(If that doesn't get you there, please advise.)

Notice Tuesday shows sunny weather. But notice that Wednesday night
shows thunderstorms with the colors inverted. Or vice versa, but the
point is the same, one is inverted and the other isn't.

My guess is that has to do with differing file types used by the
National Weather Service website server. The re-inversion program
doesn't always work, probably to do with varying picture file types.




Other stuff about screen inversion, FWIW...

I use screen and version so that most text is white on a black
background. I believe it's easier on the eyes (my eyes).

On some websites, the screen inversion can be reversed so that pictures
look normal. Of course that helps a lot. Even though viewing pictures is
somewhat problematic, screen inversion is still by far better than
trying to use color schemes to get white text on a black background.