diff --git a/src/core/components/send-message-form/send-message-form.scss b/src/core/components/send-message-form/send-message-form.scss
index 2e4ef33ca..25a62dbdd 100644
--- a/src/core/components/send-message-form/send-message-form.scss
+++ b/src/core/components/send-message-form/send-message-form.scss
@@ -21,4 +21,8 @@
         margin: 5px 10px;
         resize: vertical;
     }
+
+    .core-send-message-input::placeholder {
+        color: var(--ion-placeholder-color);
+    }
 }
diff --git a/src/core/features/course/components/format/core-course-format.html b/src/core/features/course/components/format/core-course-format.html
index 59eec9907..c096739ec 100644
--- a/src/core/features/course/components/format/core-course-format.html
+++ b/src/core/features/course/components/format/core-course-format.html
@@ -19,8 +19,15 @@
                 <div *ngIf="displaySectionSelector && sections && hasSeveralSections"
                     class="ion-text-wrap ion-justify-content-between ion-align-items-center core-button-selector-row"
                     [class.core-section-download]="downloadEnabled">
-                    <core-combobox [modalOptions]="sectionSelectorModalOptions" interface="modal" listboxId="core-course-section-button"
-                        icon="fas-folder" [label]="'core.course.section' | translate" (onChange)="sectionChanged($event)">
+                    <core-combobox
+                        [modalOptions]="sectionSelectorModalOptions"
+                        interface="modal"
+                        listboxId="core-course-section-button"
+                        icon="fas-folder"
+                        [label]="'core.course.section' | translate"
+                        [selection]="selectedSection ? selectedSection.name : 'core.course.sections' | translate"
+                        (onChange)="sectionChanged($event)"
+                    >
                         <span slot="text">
                             <core-format-text *ngIf="selectedSection" [text]="selectedSection.name" contextLevel="course"
                                 [contextInstanceId]="course?.id" [clean]="true" [singleLine]="true">
diff --git a/src/core/features/editor/components/rich-text-editor/rich-text-editor.scss b/src/core/features/editor/components/rich-text-editor/rich-text-editor.scss
index 294d029f3..395112a76 100644
--- a/src/core/features/editor/components/rich-text-editor/rich-text-editor.scss
+++ b/src/core/features/editor/components/rich-text-editor/rich-text-editor.scss
@@ -1,6 +1,6 @@
 @import "~theme/globals";
 :host {
-    --placeholder-color: var(--gray-light);
+    --placeholder-color: var(--ion-placeholder-color);
     --toobar-background: var(--white);
     --button-color: var(--ion-text-color);
     --button-active-color: var(--gray);
@@ -12,7 +12,6 @@
     --color: var(--white);
     --button-color: var(--gray-light);
     --button-active-color: var(--gray-dark);
-    --placeholder-color: var(--gray);
     --toobar-background: var(--black);
 }
 
diff --git a/src/core/features/login/pages/credentials/credentials.html b/src/core/features/login/pages/credentials/credentials.html
index 73e6407e9..364f1fe3b 100644
--- a/src/core/features/login/pages/credentials/credentials.html
+++ b/src/core/features/login/pages/credentials/credentials.html
@@ -67,7 +67,7 @@
             expand="block"
             fill="clear"
             color="dark"
-            class="core-login-forgotten-password core-button-as-link"
+            class="core-login-forgotten-password core-button-as-link ion-text-wrap"
             (click)="forgottenPassword()"
         >
             <ion-label>{{ 'core.login.forgotten' | translate }}</ion-label>
diff --git a/src/core/features/login/pages/reconnect/reconnect.html b/src/core/features/login/pages/reconnect/reconnect.html
index 96f21005a..23445a7ae 100644
--- a/src/core/features/login/pages/reconnect/reconnect.html
+++ b/src/core/features/login/pages/reconnect/reconnect.html
@@ -76,7 +76,7 @@
         expand="block"
         fill="clear"
         color="dark"
-        class="core-login-forgotten-password core-button-as-link"
+        class="core-login-forgotten-password core-button-as-link ion-text-wrap"
         (click)="forgottenPassword()"
     >
         <ion-label>{{ 'core.login.forgotten' | translate }}</ion-label>
diff --git a/src/core/features/login/pages/site/site.html b/src/core/features/login/pages/site/site.html
index c9f8c432c..0ac83b5ea 100644
--- a/src/core/features/login/pages/site/site.html
+++ b/src/core/features/login/pages/site/site.html
@@ -109,7 +109,7 @@
 
     <!-- Help. -->
     <ion-button
-        class="ion-margin-top core-login-need-help core-button-as-link"
+        class="ion-margin-top core-login-need-help core-button-as-link ion-text-wrap"
         (click)="showHelp()"
         aria-haspopup="dialog"
         expand="block"
diff --git a/src/theme/globals.variables.scss b/src/theme/globals.variables.scss
index e7303c9ac..ae2d7c558 100644
--- a/src/theme/globals.variables.scss
+++ b/src/theme/globals.variables.scss
@@ -46,21 +46,21 @@ $orange:          #f98012 !default; // Accent (never text).
 $yellow:          #fbad1a !default; // Accent (never text).
 $purple:          #8e24aa !default; // Accent (never text).
 
-$blue-light:      mix($blue, white, 40%) !default; // Background.
+$blue-light:      mix($blue, white, 20%) !default; // Background.
 $blue-dark:       darken($blue, 10%) !default;
 
-$turquoise-light: mix($turquoise, white, 40%) !default; // Background.
+$turquoise-light: mix($turquoise, white, 20%) !default; // Background.
 $turquoise-dark:  darken($turquoise, 10%) !default;
 
-$green-light:     mix($green, white, 40%) !default;
+$green-light:     mix($green, white, 20%) !default;
 $green-dark:      darken($green, 10%) !default;
 
-$red-light:       mix($red, white, 40%) !default;
+$red-light:       mix($red, white, 20%) !default;
 $red-dark:        darken($red, 10%) !default;
 
 $orange-light:    lighten($orange, 10%) !default;
 
-$yellow-light:    mix($yellow, white, 40%) !default;
+$yellow-light:    mix($yellow, white, 20%) !default;
 $yellow-dark:     mix($yellow, black, 40%) !default;
 
 $brand-color:          $orange !default;
@@ -75,8 +75,8 @@ $link-color:               $blue !default;
 $link-color-dark:          $blue-light !default;
 $background-color:         $gray-light !default;
 $background-color-dark:    $shade-90 !default;
-$subdued-text-color:       $gray-darker !default;
-$subdued-text-color-dark:  $gray-lighter !default;
+$subdued-text-color:       #595959 !default;
+$subdued-text-color-dark:  #b4b4b4 !default;
 
 $ion-item-background:      $white !default;
 $ion-item-background-dark: $shade-80 !default;
@@ -87,6 +87,10 @@ $ion-item-divider-background-dark: $shade-75 !default;
 $ion-item-divider-color-dark: $text-color-dark !default;
 $core-spacer-background-dark: $shade-100 !default;
 
+$ion-placeholder-color: $subdued-text-color;
+$ion-placeholder-color-dark: $subdued-text-color-dark;
+$color: #d0c9b9;
+$color: #fcf5e3;
 $core-online-color: #5cb85c !default;
 
 $primary:    $brand-color !default;
@@ -164,12 +168,12 @@ $colors:  (
 ) !default;
 
 $primary-dark:    $brand-color !default;
-$secondary-dark:  $blue-light !default;
-$tertiary-dark:   $turquoise-light !default;
-$danger-dark:     $red-light !default;
-$warning-dark:    $yellow-light !default;
-$success-dark:    $green-light !default;
-$info-dark:       $blue-light !default;
+$secondary-dark:  mix($blue, white, 40%) !default;
+$tertiary-dark:   mix($turquoise, white, 40%) !default;
+$danger-dark:     mix($red, white, 40%) !default;
+$warning-dark:    mix($yellow, white, 40%) !default;
+$success-dark:    mix($green, white, 40%) !default;
+$info-dark:       mix($blue, white, 40%) !default;
 $light-dark:      $dark !default;
 $medium-dark:     $gray-light !default;
 $dark-dark:       $light !default;
@@ -299,7 +303,7 @@ $core-text-hightlight-background-color: lighten($blue, 40%) !default;
 
 $core-tabs-background: $white !default;
 $core-tab-background: $core-tabs-background !default;
-$core-tab-color: $gray-dark !default;
+$core-tab-color: $subdued-text-color !default;
 $core-tab-color-active: $dark !default;
 $core-tab-font-weight-active: normal !default;
 $core-tab-border-color: $gray !default;
@@ -308,7 +312,7 @@ $core-tabs-height: 56px !default;
 
 $core-tabs-background-dark: $shade-75 !default;
 $core-tab-background-dark: $core-tabs-background-dark !default;
-$core-tab-color-dark: $white !default;
+$core-tab-color-dark: $subdued-text-color-dark !default;
 $core-tab-color-active-dark: $dark-dark !default;
 $core-tab-border-color-dark: $gray-light !default;
 $core-tab-border-color-active-dark: $core-tab-border-color-active !default;
@@ -356,8 +360,10 @@ $core-star-color: $brand-color !default;
 $core-large-avatar-size:  90px !default;
 $core-avatar-size:  44px !default;
 
-$core-send-message-input-background: $gray !default;
+$core-send-message-input-background: $gray-light !default;
 $core-send-message-input-color: $black !default;
+$core-send-message-input-background-dark: $black !default;
+$core-send-message-input-color-dark: $white !default;
 
 $core-more-icon-color: null !default;
 $core-more-item-border: null !default;
diff --git a/src/theme/theme.base.scss b/src/theme/theme.base.scss
index 1d66e9ca3..624103315 100644
--- a/src/theme/theme.base.scss
+++ b/src/theme/theme.base.scss
@@ -874,6 +874,13 @@ html.ios div.fake-ion-item {
 
 }
 
+// Disabled items.
+ion-item.item-disabled,
+ion-item.item-interactive-disabled:not(.item-multiple-inputs) ion-label,
+ion-datetime.datetime-disabled {
+    opacity: .8 !important;
+}
+
 // Make links clickable when inside radio or checkbox items. Style part.
 @media (hover: hover) {
     ion-item.item-multiple-inputs:hover::part(native) {
diff --git a/src/theme/theme.dark.scss b/src/theme/theme.dark.scss
index 12a09ee44..d582bc97d 100644
--- a/src/theme/theme.dark.scss
+++ b/src/theme/theme.dark.scss
@@ -58,6 +58,8 @@
 
     --contrast-background: black;
 
+    --ion-placeholder-color: #{$ion-placeholder-color-dark};
+
     ion-content {
         --background: var(--ion-background-color);
         --background-alternative: var(--black);
@@ -127,6 +129,9 @@
     --core-dd-question-selected-shadow: 2px 2px 4px var(--gray-light);
     --core-dd-question-border: var(--gray-light);
 
+    --core-send-message-input-background: #{$core-send-message-input-background-dark};
+    --core-send-message-input-color: #{$core-send-message-input-color-dark};
+
     --addon-messages-message-bg: #{$addon-messages-message-bg-dark};
     --addon-messages-message-activated-bg: #{$addon-messages-message-activated-bg-dark};
     --addon-messages-message-note-text: #{$addon-messages-message-note-text-dark};
diff --git a/src/theme/theme.light.scss b/src/theme/theme.light.scss
index 363c93576..fbca663e8 100644
--- a/src/theme/theme.light.scss
+++ b/src/theme/theme.light.scss
@@ -81,6 +81,8 @@
 
     --text-hightlight-background-color: #{$core-text-hightlight-background-color};
 
+    --ion-placeholder-color: #{$ion-placeholder-color};
+
     ion-content {
         --background: var(--ion-background-color);
         --background-alternative: var(--gray-lighter);
@@ -223,6 +225,10 @@
         --item-divider-background: var(--spacer-background);
     }
 
+    ion-note {
+        --color: var(--subdued-text-color);
+    }
+
     --core-combobox-background: var(--ion-item-background);
     --core-combobox-color: #{$core-combobox-color};
     --core-combobox-background: #{$core-combobox-background};