fix nav tab and tag color in dark theme

client/src/app/+admin/follows/following-add/following-add.component.scss

@@ -5,6 +5,13 @@ textarea {
   height: 250px;
 }
 
+.form-control {
+  &, &:focus {
+    background-color: var(--inputColor);
+    color: var(--mainForegroundColor);
+  }
+}
+
 input[type=submit] {
   @include peertube-button;
   @include orange-button;

client/src/app/videos/+video-edit/shared/video-edit.component.scss

@@ -164,15 +164,17 @@ p-calendar {
   tag-input-form {
     input {
       height: 30px !important;
-      background-color: #fff !important;
+
+      background-color: var(--mainBackgroundColor) !important;
+      color: var(--mainForegroundColor) !important;
     }
   }
 
   tag {
-    background-color: #E5E5E5 !important;
+    background-color: var(--inputColor) !important;
     border-radius: 3px !important;
     font-size: 15px !important;
-    color: #000 !important;
+    color: var(--mainForegroundColor) !important;
     height: 30px !important;
     line-height: 30px !important;
     margin: 0 5px 0 0 !important;

client/src/sass/application.scss

@@ -283,6 +283,11 @@ ngb-tabset.bootstrap {
   }
 }
 
+.nav-tabs .nav-link.active {
+  background-color: var(--mainBackgroundColor) !important;
+  border-bottom: none;
+}
+
 .orange-button {
   @include peertube-button;
   @include orange-button;

client/src/sass/primeng-custom.scss

@@ -7,7 +7,7 @@
 @mixin glyphicon-light {
   font-family: 'Glyphicons Halflings';
   text-decoration: none !important;
-  color: #000 !important;
+  color: var(--mainForegroundColor) !important;
 }
 
 // data table customizations
@@ -33,7 +33,7 @@ p-table {
   .ui-table-tbody {
     tr {
       &:hover {
-        background-color: #f0f0f0 !important;
+        background-color: var(--submenuColor) !important;
       }
 
       &:not(:hover) {
@@ -60,15 +60,15 @@ p-table {
 
   th {
     border: none !important;
-    border-bottom: 1px solid #f0f0f0 !important;
+    border-bottom: 1px solid var(--submenuColor) !important;
     text-align: left !important;
     padding: 5px 0 5px 15px !important;
     font-weight: $font-semibold !important;
-    color: #000 !important;
+    color: var(--mainForegroundColor) !important;
 
     &.ui-sortable-column:hover {
-      background-color: #f0f0f0 !important;
-      border: 1px solid #f0f0f0 !important;
+      background-color: var(--submenuColor) !important;
+      border: 1px solid var(--submenuColor) !important;
       border-width: 0 1px !important;
 
       &:first-child {
@@ -77,7 +77,7 @@ p-table {
     }
 
     &.ui-state-highlight {
-      background-color: #fff !important;
+      background-color:var(--submenuColor) !important;
 
       .pi {
         @extend .glyphicon;
@@ -109,8 +109,9 @@ p-table {
 
   p-paginator {
     .ui-paginator-bottom {
+      background-color: var(--mainBackgroundColor) !important;
       position: relative;
-      border: 1px solid #f0f0f0 !important;
+      border: 1px solid var(--submenuColor) !important;
       height: 40px;
       display: flex;
       justify-content: center;