In bug#50179, I added support for bright ANSI colors and changed the way 
the colors are defined to use faces instead of a vector of color values. 
However, I neglected to update the themes to take this into account. 
Attached is a patch that does this. Note: I only updated themes which 
defined `ansi-color-names-vector' (except for the Modus themes, which 
were already up-to-date).

For the most part, I just converted the definitions and added some 
hopefully-reasonable bright variants, but I did tweak the colors here 
and there to ensure 1) a reasonably-visible difference between normal 
and bright colors, and 2) that the color values roughly matched their 
names (mainly for wombat).

I can provide screenshots if it would help, but rainbow-mode on GNU ELPA 
should hopefully make it fairly easy to review the colors.