diff --git a/scenes/dragon.json b/scenes/dragon.json
index 3cf0a4b8..bf1376de 100644
--- a/scenes/dragon.json
+++ b/scenes/dragon.json
@@ -18,7 +18,7 @@
       "scale": 2500,
       "center": [-45, -135, -100],
       "rotation": [0, 200, 0],
-      "material": "white lambertian"
+      "material": "iridescent"
     },
     {
       "kind": "Quad",
@@ -55,11 +55,15 @@
       }
     },
     {
-      "name": "white lambertian",
+      "name": "iridescent",
       "kind": "Lambertian",
       "albedo": {
         "kind": "SolidColor",
-        "color": [0.8, 0.8, 0.8]
+        "color": [0.6, 0.6, 0.6]
+      },
+      "thin_film": {
+        "refraction_index": 1.5,
+        "thickness": 256.0
       }
     },
     {
diff --git a/scenes/iridescent.json b/scenes/iridescent.json
deleted file mode 100644
index e4713928..00000000
--- a/scenes/iridescent.json
+++ /dev/null
@@ -1,51 +0,0 @@
-{
-  "time_0": 0,
-  "time_1": 1,
-  "camera": {
-    "look_from": [30, 20, 10],
-    "look_at": [0, -1, 0],
-    "up": [-0.5, 1, -0.5],
-    "vertical_fov": 40,
-    "aperture": 0,
-    "focus_distance": 10
-  },
-  "background_color": [0, 0, 0],
-  "objects": [
-    {
-      "kind": "Quad",
-      "priority": true,
-      "q": [-100, 80, -100],
-      "u": [200, 0, 0],
-      "v": [0, 0, 100],
-      "material": "lamp"
-    },
-    {
-      "kind": "Boxy",
-      "corner_0": [-7, -7, -7],
-      "corner_1": [7, 7, 7],
-      "material": "iridescent"
-    }
-  ],
-  "materials": [
-    {
-      "name": "lamp",
-      "kind": "DiffuseLight",
-      "emit": {
-        "kind": "SolidColor",
-        "color": [2.5, 2.5, 2.5]
-      }
-    },
-    {
-      "name": "iridescent",
-      "kind": "Lambertian",
-      "albedo": {
-        "kind": "SolidColor",
-        "color": [0.8, 0.8, 0.8]
-      },
-      "thin_film": {
-        "refractive_index": 1.5,
-        "thickness": 600.0
-      }
-    }
-  ]
-}