* Better harmonic neutral color progression
fix
* Invert light/dark colors for dark theme
fix
* Lighten form control borders a bit
* Use correct text color variables
Sums up and adds to the comments made in #1175.
I wasn't sure where to put these kinds of docs, as tehy are code related and not end user facing. Let's discuss whether or not this fits in here or should become part of the docs repo.
fix