diff --git a/src/themes/Kali/sass/common/_colors.scss b/src/themes/Kali/sass/common/_colors.scss
index fb2d2f16..0c0c16d7 100644
--- a/src/themes/Kali/sass/common/_colors.scss
+++ b/src/themes/Kali/sass/common/_colors.scss
@@ -3,7 +3,7 @@
 
 $_dark_base_color: #272a34;
 
-$is_highcontrast: "false";
+$is_highcontrast: false;
 
 $base_color: if($variant == 'light', darken(#ffffff, 2%), $_dark_base_color);
 $text_color: if($variant == 'light', black, white);
@@ -16,6 +16,7 @@ $selected_borders_color: if($variant== 'light', darken($selected_bg_color, 15%),
 $borders_color: if($variant == 'light', darken($bg_color, 15%), darken($bg_color, 10%));
 $alt_borders_color: if($variant == 'light', darken($bg_color, 24%), darken($bg_color, 18%));
 $borders_edge: if($variant == 'light', transparentize(white, 0.2), transparentize($fg_color, 0.93));
+$outer_borders_color: $borders_edge;
 $link_color: if($variant == 'light', darken($selected_bg_color, 10%), lighten($selected_bg_color, 20%));
 $link_visited_color: if($variant == 'light', darken($selected_bg_color, 20%), lighten($selected_bg_color, 10%));
 $top_hilight: $borders_edge;