MOBILE-3401 style: Some fix on darkmode

src/addon/mod/quiz/components/index/index.scss

@@ -46,6 +46,12 @@ ion-app.app-root addon-mod-quiz-index {
                 background-color: $blue-dark;
                 color: $blue-light;
             }
+
+            .item.addon-mod_quiz-highlighted.activated,
+            .item.addon-mod_quiz-highlighted.activated p {
+                background-color: $blue;
+                color: $blue-light;
+            }
         }
     }
 }

src/app/app.scss

@@ -441,6 +441,18 @@ ion-app.app-root {
         }
       }
     }
+    @include darkmode() {
+      @each $color-name, $color-base, $color-contrast in get-colors($colors-dark) {
+        &.select-md-#{$color-name},
+        &.select-ios-#{$color-name} {
+           color: $color-base;
+
+          .select-icon .select-icon-inner {
+            color: $color-base;
+          }
+        }
+      }
+    }
   }
 
   .item-label-stacked ion-select[multiple="true"] {