diff --git a/src/Umbraco.Web.UI.Client/src/views/propertyeditors/blocklist/blocklistentryeditors/unsupportedblock/unsupportedblock.editor.less b/src/Umbraco.Web.UI.Client/src/views/propertyeditors/blocklist/blocklistentryeditors/unsupportedblock/unsupportedblock.editor.less
index 672a6d3ff4..aff741e278 100644
--- a/src/Umbraco.Web.UI.Client/src/views/propertyeditors/blocklist/blocklistentryeditors/unsupportedblock/unsupportedblock.editor.less
+++ b/src/Umbraco.Web.UI.Client/src/views/propertyeditors/blocklist/blocklistentryeditors/unsupportedblock/unsupportedblock.editor.less
@@ -2,6 +2,7 @@
 
     position: relative;
     display: block;
+    box-sizing: border-box;
     margin-bottom: 4px;
     margin-top: 4px;
     width: 100%;
@@ -18,8 +19,8 @@
         min-height: 48px;
         border-bottom: 1px solid @gray-9;
         
-        background-color: @ui-btn-negative;
-        color: @ui-btn-negative-type;
+        background-color: @gray-11;
+        color: @gray-6;
         
         i {
             font-size: 22px;
@@ -37,7 +38,7 @@
 
         padding: 20px;
 
-        background-color: @red-washed;
+        background-color: @gray-11;
 
         a {
             text-decoration: underline;