diff --git a/zxlive/proof_panel.py b/zxlive/proof_panel.py
index d502e44c..92526dc5 100644
--- a/zxlive/proof_panel.py
+++ b/zxlive/proof_panel.py
@@ -118,6 +118,9 @@ def init_rewrites_bar(self) -> None:
             QTreeView::Item{{
                 height:{fi.pixelSize() * 2}px;
             }}
+            QTreeView::Item:!enabled {{
+                color: #c0c0c0;
+            }}
             ''')
 
         # Set the models