diff --git a/jsm/TetraGUI.js b/jsm/TetraGUI.js
index 40ec2eb..d4a0bc1 100644
--- a/jsm/TetraGUI.js
+++ b/jsm/TetraGUI.js
@@ -68,7 +68,7 @@ class TetraGUI extends GUI {
                     colorfullTexture = new THREE.TextureLoader(loadingManager).load("./images/colorfull.jpg", texture => {
                         texture.wrapS = THREE.RepeatWrapping
                         texture.wrapT = THREE.MirroredRepeatWrapping
-                        texture.repeat.set(2, 4)
+                        texture.repeat.set(1, 2)
                     })
                     loadingManager.onLoad = function() {
                         scene.vortex.darkCylinder.material.map = darkTexture
@@ -239,7 +239,7 @@ class TetraGUI extends GUI {
                         })
                     break
                     case "MeshPhysicalMaterial":
-                        minoMaterialFactory = color => new THREE.MeshStandardMaterial({
+                        minoMaterialFactory = color => new THREE.MeshPhysicalMaterial({
                             color              : "white",
                             envMap             : environnement,
                             transparent        : true,
diff --git a/jsm/TetraScene.js b/jsm/TetraScene.js
index e684522..10ddea1 100644
--- a/jsm/TetraScene.js
+++ b/jsm/TetraScene.js
@@ -16,7 +16,7 @@ class TetraScene extends THREE.Scene {
         this.add(this.ambientLight)
         
         this.directionalLight = new THREE.DirectionalLight(0xffffff, 20)
-        this.directionalLight.position.set(5, -9, -20)
+        this.directionalLight.position.set(5, -100, -20)
         this.add(this.directionalLight)
 
 
diff --git a/jsm/gamelogic.js b/jsm/gamelogic.js
index 4c9d375..823145f 100644
--- a/jsm/gamelogic.js
+++ b/jsm/gamelogic.js
@@ -91,7 +91,7 @@ class MinoMaterial extends THREE.MeshBasicMaterial {
             envMap: environnement,
             reflectivity: 0.9,
             transparent: true,
-            opacity: 0.95,
+            opacity: 0.8,
             side: THREE.DoubleSide,
         })
     }