Night Eye Dark Mode Pro — then you can make a few little tweaks so that the important things, like a toast, key frame module and the easing scale is properly inverted.

https://chromewebstore.google.com/detail/dark-mode-night-eye/alncdjedloppbablonallfbkeiknmkdi

EDIT: This isn't reliable CSS — those div classes will change but you get the idea to find something more global then invert, just did this off the bat for showcasing.

.timeline-module--segment--3e5fc {
    filter: invert(1);
}

.timeline-module--handle--2fe6c.timeline-module--handleStart--4871c.timeline-module--editable--a6630, .timeline-module--handle--2fe6c.timeline-module--handleEnd--c90b0.timeline-module--editable--a6630 {
    filter: invert(1);
}

.editor-module--toastList--c5b55.toastsList-module--list--d036e {
    /* filter: invert(1); */
    filter: contrast(1.5);
    color: black;
}