- Respect defaults.

scss/_variables.scss

@@ -22,9 +22,9 @@ $green:   #198754 !default;
 $teal:    #20c997 !default;
 $cyan:    #0dcaf0 !default;
 
-$primary: $purple;
-$info:    $blue;
-$warning: $orange;
+$primary: $purple !default;
+$info:    $blue !default;
+$warning: $orange !default;
 
 // Customize the light and dark text colors for use in our color contrast function.
 $primary-50: #f1e8ff;
@@ -50,19 +50,19 @@ $danger-lighter: #ff7991;
 $danger-lightest: hsl(350, 100%, 96%);
 
 // Options
-$enable-shadows: true;
+$enable-shadows: true !default;
 
 // Body
-$body-bg: hsl(260, 27%, 94%);
+$body-bg: hsl(260, 27%, 94%) !default;
 
 // Links
-$link-decoration: none;
-$link-hover-decoration: underline;
+$link-decoration: none !default;
+$link-hover-decoration: underline !default;
 
 // Typography
 $font-family-sans-serif: "Roboto", sans-serif !default;
-$font-size-base: 0.9rem;
-$line-height-base: 1.6;
+$font-size-base: 0.9rem !default;
+$line-height-base: 1.6 !default;
 
 $h1-font-size: $font-size-base * 1.6 !default;
 $h2-font-size: $font-size-base * 1.4 !default;
@@ -70,14 +70,14 @@ $h3-font-size: $font-size-base * 1.3 !default;
 $h4-font-size: $font-size-base * 1.2 !default;
 $h5-font-size: $font-size-base * 1.1 !default;
 $h6-font-size: $font-size-base !default;
-$headings-font-weight: bold; // Make headings bold
+$headings-font-weight: bold !default; // Make headings bold
 
 // Tables
 $table-hover-bg-factor: .03 !default;
 
 // Code
-$code-font-size: 100%;
-$code-color: $primary;
+$code-font-size: 100% !default;
+$code-color: $primary !default;
 
 // Forms
 $input-bg: $white;