diff --git a/mail/templates/pixelegg/app.css b/mail/templates/pixelegg/app.css
index f5e215a710..b827217b2c 100755
--- a/mail/templates/pixelegg/app.css
+++ b/mail/templates/pixelegg/app.css
@@ -2273,6 +2273,9 @@ div.mailPreviewHeaders div.mail_extraEmails img.et2_button_icon {
   width: 24px;
   height: 24px;
 }
+div.mailPreviewHeaders img.et2_button_icon {
+  background-color: inherit;
+}
 #mail-index_previewAttachmentArea {
   background-color: #f0f0f0;
   border-color: #E6E6E6;
diff --git a/mail/templates/pixelegg/app.less b/mail/templates/pixelegg/app.less
index 0cf447f001..43864bfdd4 100755
--- a/mail/templates/pixelegg/app.less
+++ b/mail/templates/pixelegg/app.less
@@ -1227,6 +1227,9 @@ div.mailPreviewHeaders div.mail_extraEmails {
 	}
 }
 
+div.mailPreviewHeaders img.et2_button_icon {
+	background-color: inherit;
+}
 // Anhänge an Email
 
 #mail-index_previewAttachmentArea {