Big Al wrote:

John Doe wrote:

Had to add the code to Facebook...

i.uiMediaThumbImg {
-webkit-filter: invert(100%);
filter: invert(100%);
}

Otherwise, so far every picture and video is re-inverted while
everything else is left inverted. Better and faster than before.

I haven't been following this well,

You might be able to follow it if you read the original post first, or
at least read the subject line.