diff --git a/qubes_config/qubes-new-qube-base.css b/qubes_config/qubes-new-qube-base.css
index 96ffcce..a6439bf 100644
--- a/qubes_config/qubes-new-qube-base.css
+++ b/qubes_config/qubes-new-qube-base.css
@@ -53,6 +53,10 @@ radiobutton:checked radio {
     color: @text-color;
 }
 
+.flat_button:disabled {
+    background: @dark-gray;
+}
+
 #applications {
     background: @top-background;
     margin-top: 10px;