diff --git a/src/Arts.cs b/src/Arts.cs
index 423bbbb..13213c7 100644
--- a/src/Arts.cs
+++ b/src/Arts.cs
@@ -62,7 +62,11 @@ static class Arts
         // box
         Hierarchy.Push(Mono.box_pose.ToMatrix(Mono.box_scale));
         meshes["InsideOut"].Draw(mat_unlit, Matrix.Identity);
-        meshes["InsideOut"].Draw(mat_backbox, Matrix.Identity);
+        meshes["InsideOut"].Draw(
+            mat_backbox,
+            Matrix.Identity,
+            new Color(0.2f, 0.2f, 0.2f)
+        );
         meshes["Corrugation"].Draw(
             Mono.in_dist.state ? mat_justcolor : mat_unlit,
             Matrix.Identity