diff --git a/app/src/main/java/eu/faircode/email/AdapterMessage.java b/app/src/main/java/eu/faircode/email/AdapterMessage.java
index 0167a418c7..2754e90e65 100644
--- a/app/src/main/java/eu/faircode/email/AdapterMessage.java
+++ b/app/src/main/java/eu/faircode/email/AdapterMessage.java
@@ -958,6 +958,7 @@ public class AdapterMessage extends RecyclerView.Adapter<AdapterMessage.ViewHold
                 vwColor.setTag(colorBackground);
                 vwColor.setBackgroundColor(colorBackground);
             }
+            vwColor.setAlpha(message.ui_seen ? Helper.LOW_LIGHT : 1.0f);
             vwColor.setVisibility(color_stripe ? View.VISIBLE : View.GONE);
 
             // Expander