diff --git a/app/appearance/themes/daylight/theme.css b/app/appearance/themes/daylight/theme.css
index 76af43380..9d45dc083 100644
--- a/app/appearance/themes/daylight/theme.css
+++ b/app/appearance/themes/daylight/theme.css
@@ -153,6 +153,11 @@
     --b3-pdf-dark: #212224;
 }
 
+/* https://github.com/siyuan-note/siyuan/issues/6440 */
+.protyle-action--order:after {
+    mix-blend-mode: multiply;
+}
+
 .b3-typography div.hljs, .protyle-wysiwyg div.hljs {
     background-color: #f8f9fa;
 }
diff --git a/app/appearance/themes/midnight/theme.css b/app/appearance/themes/midnight/theme.css
index cfde27287..918648efa 100644
--- a/app/appearance/themes/midnight/theme.css
+++ b/app/appearance/themes/midnight/theme.css
@@ -153,6 +153,11 @@
     --b3-pdf-dark: #212224;
 }
 
+/* https://github.com/siyuan-note/siyuan/issues/6440 */
+.protyle-action--order:after {
+    mix-blend-mode: screen;
+}
+
 .b3-text-field::-webkit-calendar-picker-indicator {
     filter: invert(1)
 }