For allowing the designer to select what color text should be when on
a background of --accent-color-bright.
Note: The value for this color happens to match the color of
previously-defined values currently, but that's just me throwing
programmer-art colors in place. That's why we don't reference an
existing variable in the value here, even though the color is
currently identical to a previous one, (we wouldn't want a designer to
think they are necessarily linked).
--accent-color: #287789;
--accent-color-bright: #44c7ef;
--text-fg-on-accent: white;
+ --text-fg-on-accent-bright: #333738;
/* Some colors intended to convey semnatics. */
--warning-color: #ffa92a;