Brief: Toggle subtle line numbers.
Symbol: modus-themes-subtle-line-numbers (‘boolean’ type)
Possible value:
nil (default)
t
The default style for display-line-numbers-mode and its global variant
is to apply a subtle gray background to the line numbers. The current
line has a more pronounced background and foreground combination to
bring more attention to itself.
Similarly, the faces for display-line-numbers-major-tick and its
counterpart display-line-numbers-minor-tick use appropriate styles that
involve a bespoke background and foreground combination.
With a non-nil value (t), line numbers have no background of their own.
Instead they retain the primary background of the theme, blending with
the rest of the buffer. Foreground values for all relevant faces are
updated to accommodate this aesthetic.