diff --git a/client/galaxy/style/scss/overrides.scss b/client/galaxy/style/scss/overrides.scss
index d823ca46904..456f65fc816 100644
--- a/client/galaxy/style/scss/overrides.scss
+++ b/client/galaxy/style/scss/overrides.scss
@@ -85,3 +85,18 @@ pre.code {
     color: white;
     padding: 1em;
 }
+
+// increase visibility of links within alert boxes
+.alert-info, .alert-danger, .alert-warning, .alert-success {
+    a {
+        font-weight: bold;
+    }
+}
+
+// increase visibility of dropdown menu section headers
+.dropdown-header {
+    font-size: 1rem;
+    color: $brand-dark;
+    padding: .5rem 1.5rem .5rem 1rem;
+    font-weight: bold;
+}
diff --git a/client/galaxy/style/scss/ui.scss b/client/galaxy/style/scss/ui.scss
index 85f3f6d025b..e0fc091a557 100644
--- a/client/galaxy/style/scss/ui.scss
+++ b/client/galaxy/style/scss/ui.scss
@@ -256,6 +256,8 @@ $ui-margin-horizontal-large: $margin-v * 2;
 .popover {
     max-width: 700px;
     .popover-header {
+        color: $brand-white;
+        background-color: $brand-primary;
         i {
             @extend .float-right;
             @extend .pl-4;