fix: wrong slider background in dark mode

Author: mrholek

scss/_switches.scss

@@ -19,11 +19,15 @@
   display: block;
   height: inherit;
   cursor: pointer;
-  background-color: $white;
-  border: $border-width solid $border-color;
+  border: $border-width solid;
   transition: .15s ease-out;
   @include border-radius($border-radius);
 
+  @include themes($form-theme-map) {
+    background-color: themes-get-value("input-bg");
+    border-color: themes-get-value("input-border-color");
+  }
+
   &::before {
     position: absolute;
     top: $switch-handle-margin;

scss/mixins/_switches.scss

@@ -56,7 +56,7 @@
 
 @mixin switch-outline-variant($color) {
   .c-switch-input:checked + .c-switch-slider {
-    background-color: $white;
+    background-color: inherit;
     border-color: $color;
 
     &::before {
@@ -70,7 +70,7 @@
 
 @mixin switch-opposite-variant($color) {
   .c-switch-input:checked + .c-switch-slider {
-    background-color: $white;
+    background-color: inherit;
     border-color: $color;
 
     &::before {