A later commit shows the hashes of commits outside the bisect range in a
dimmer variant of the default text color. A darker shade of a terminal
palette color can't be derived, because we don't know what the palette
is, so leave the shading to the terminal and use its faint attribute,
SGR 2. In gookit/color that attribute is called OpFuzzy.
Terminals that don't implement SGR 2 render the text in its normal color.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>