Linux puskom-ProLiant-DL385-Gen10 5.4.0-150-generic #167~18.04.1-Ubuntu SMP Wed May 24 00:51:42 UTC 2023 x86_64

//usr/share/themes/Ambiance/gtk-3.0/public-colors.css

 /*
 * Some applications depend on these named colors.
 */

@define-color theme_fg_color @fg_color;
@define-color theme_bg_color @bg_color;
@define-color theme_base_color @base_color;
@define-color theme_selected_bg_color @selected_bg_color;
@define-color theme_selected_fg_color @selected_fg_color;
@define-color insensitive_bg_color @bg_color;
@define-color insensitive_fg_color @fg_color;
@define-color insensitive_base_color @base_color;
@define-color theme_unfocused_fg_color @backdrop_fg_color;
@define-color theme_unfocused_bg_color @bg_color;
@define-color theme_unfocused_base_color @base_color;
@define-color theme_unfocused_selected_bg_color @selected_bg_color;
@define-color theme_unfocused_selected_fg_color @selected_fg_color;
@define-color borders shade(@bg_color, 0.82);
@define-color unfocused_borders transparent;

@define-color warning_color @warning_fg_color;
@define-color error_color @error_fg_color;
@define-color success_color @success_color;