diff --git a/unity/moving-sphere-ii/Assets/New Material 1.mat b/unity/moving-sphere-ii/Assets/GreenMaterial.mat
similarity index 98%
rename from unity/moving-sphere-ii/Assets/New Material 1.mat
rename to unity/moving-sphere-ii/Assets/GreenMaterial.mat
index d6298b8..25603f0 100644
--- a/unity/moving-sphere-ii/Assets/New Material 1.mat	
+++ b/unity/moving-sphere-ii/Assets/GreenMaterial.mat
@@ -7,7 +7,7 @@ Material:
   m_CorrespondingSourceObject: {fileID: 0}
   m_PrefabInstance: {fileID: 0}
   m_PrefabAsset: {fileID: 0}
-  m_Name: New Material 1
+  m_Name: GreenMaterial
   m_Shader: {fileID: 46, guid: 0000000000000000f000000000000000, type: 0}
   m_Parent: {fileID: 0}
   m_ModifiedSerializedProperties: 0
diff --git a/unity/moving-sphere-ii/Assets/New Material 1.mat.meta b/unity/moving-sphere-ii/Assets/GreenMaterial.mat.meta
similarity index 100%
rename from unity/moving-sphere-ii/Assets/New Material 1.mat.meta
rename to unity/moving-sphere-ii/Assets/GreenMaterial.mat.meta
diff --git a/unity/moving-sphere-ii/Assets/New Material.mat b/unity/moving-sphere-ii/Assets/RedMaterial.mat
similarity index 98%
rename from unity/moving-sphere-ii/Assets/New Material.mat
rename to unity/moving-sphere-ii/Assets/RedMaterial.mat
index ef15beb..347696a 100644
--- a/unity/moving-sphere-ii/Assets/New Material.mat	
+++ b/unity/moving-sphere-ii/Assets/RedMaterial.mat
@@ -7,7 +7,7 @@ Material:
   m_CorrespondingSourceObject: {fileID: 0}
   m_PrefabInstance: {fileID: 0}
   m_PrefabAsset: {fileID: 0}
-  m_Name: New Material
+  m_Name: RedMaterial
   m_Shader: {fileID: 46, guid: 0000000000000000f000000000000000, type: 0}
   m_Parent: {fileID: 0}
   m_ModifiedSerializedProperties: 0
diff --git a/unity/moving-sphere-ii/Assets/New Material.mat.meta b/unity/moving-sphere-ii/Assets/RedMaterial.mat.meta
similarity index 100%
rename from unity/moving-sphere-ii/Assets/New Material.mat.meta
rename to unity/moving-sphere-ii/Assets/RedMaterial.mat.meta