diff --git a/offline_ray_tracer/source/main.cpp b/offline_ray_tracer/source/main.cpp
index 148bf9b64fac58845138a9158202ed453784f112..25092e7091620e385200f826d1e7b99625ac3b6c 100644
--- a/offline_ray_tracer/source/main.cpp
+++ b/offline_ray_tracer/source/main.cpp
@@ -65,6 +65,8 @@ std::int32_t main(std::int32_t argc, char** argv)
   auto volume_reader   = vtkSmartPointer<vtkXMLImageDataReader>::New();
   auto volume_mapper   = vtkSmartPointer<vtkOSPRayVolumeMapper>::New();
   auto volume          = vtkSmartPointer<vtkVolume>            ::New();
+  geometry_mapper->SetScalarVisibility(false);
+  actor          ->GetProperty()->SetColor(1.0f, 1.0f, 0.0f);
 
   std::cout << "Setting up video writer.\n";
   auto window_to_image = vtkSmartPointer<vtkWindowToImageFilter>::New();