diff --git a/assets/images/3dviewer_net_start_page.png b/assets/images/3dviewer_net_start_page.png
index 32e6778..7e810a2 100644
Binary files a/assets/images/3dviewer_net_start_page.png and b/assets/images/3dviewer_net_start_page.png differ
diff --git a/source/viewer/viewer.js b/source/viewer/viewer.js
index 8f293c2..a638a64 100644
--- a/source/viewer/viewer.js
+++ b/source/viewer/viewer.js
@@ -211,7 +211,7 @@ OV.ShadingModel = class
             this.scene.environment = null;
         } else if (this.type === OV.ShadingModelType.Physical) {
             this.ambientLight.color.set (0x000000);
-            this.directionalLight.color.set (0x555555);
+            this.directionalLight.color.set (0x666666);
             this.scene.environment = this.environment;
         }
     }