Info Catalog
grub: locale_dir
grub: Special environment variables
grub: menu_color_normal
15.1.20 menu_color_highlight
----------------------------
This variable contains the foreground and background colors to be used
for the highlighted menu entry, separated by a slash ('/'). Setting
this variable changes those colors. For the available color names,
⇒color_normal.
The default is the value of 'color_highlight' (⇒
color_highlight).