This was a tricky regression to track down. 9753bfb tries to fix an
issue where the `default` face's :foreground changes to `#000000` in any
new frames created after the initial one (by calling `make-frame`),
because those frames' `background-color` and `foreground-color`
parameters default to "#000000" (possibly a bug with `disable-theme` too
eagerly defaulting them to black).
240493a replaces that with new, seemingly cleaner approach: setting
`frame-inherited-parameters`, which instructs `make-frame` to copy those
parameters from the last open frame, however, those parameters in the
initial daemon frame will be set to "unspecified-bg" or
"unspecified-fg" (see the docstring for `face-{back,fore}ground`), which
are invalid color strings. `make-frame` crashes tries to create a frame
with those color values, causing #8059.
Fix: #8059
Amend: 240493ae92
Amend: 9753bfb775
9359a81e81