When setting theme to 'auto' and using the default colorscheme, lualine
would report "theme not found, defaulting to gruvbox". Fixed by checking
that we get an actual color back when calling utils.extract_highlight_colors
before attempting to apply a brightness modifier.
* Fix brightness_modifier application.
The brightness_modifer() should only be applied when a normal color was
found.
* Apply brightness modifier when normal color not nil.
Moved application of brightness_modifier outside the if statement that
negates the brightness modifier. The modifier will now be applied when
get_color_brightness returns < 0.5.
J. Bromley
Shadman
hoob3rt