diff --git a/apps/backoffice-v2/src/index.css b/apps/backoffice-v2/src/index.css
index e6fae8777..ceb018e24 100644
--- a/apps/backoffice-v2/src/index.css
+++ b/apps/backoffice-v2/src/index.css
@@ -139,3 +139,7 @@
 a.bpComposerPoweredBy {
   display: none !important;
 }
+
+button.bpModalDialogNewConversationButton {
+  background-color: var(--bpPrimary-500) !important;
+}