diff --git a/jsm/TetraGUI.js b/jsm/TetraGUI.js
index 40a4578..f2fa9fb 100644
--- a/jsm/TetraGUI.js
+++ b/jsm/TetraGUI.js
@@ -54,12 +54,12 @@ export class TetraGUI extends GUI {
                         scene.vortex.colorFullTextureRotation = 0.006
                         scene.vortex.colorFullMoveForward     = 0.025
 
-                        scene.ambientLight.intensity     = 1
-                        scene.directionalLight.intensity = 2
+                        //scene.ambientLight.intensity     = 1
+                        scene.directionalLight.intensity = 1.8
                         
-                        Mino.mesh.material.opacity   = 0.6
-                        Mino.mesh.material.roughness = 0.4
-                        Mino.mesh.material.metalness = 0.95
+                        Mino.mesh.material.opacity   = 0.7
+                        Mino.mesh.material.roughness = 0.48
+                        Mino.mesh.material.metalness = 0.9
                     }
                 break
                 case "Espace":
@@ -138,7 +138,7 @@ export class TetraGUI extends GUI {
             cameraPosition.add(scene.camera, "fov", 0, 200).onChange(() => scene.camera.updateProjectionMatrix())
         
             let light = dev.addFolder("lights intensity").close()
-            light.add(scene.ambientLight, "intensity").name("ambient").min(0).max(20)
+            //light.add(scene.ambientLight, "intensity").name("ambient").min(0).max(20)
             light.add(scene.directionalLight, "intensity").name("directional").min(0).max(20)
             
             let directionalLightPosition = dev.addFolder("directionalLight.position").close()
@@ -170,9 +170,9 @@ export class TetraGUI extends GUI {
                             envMap: environnement,
                             side: THREE.DoubleSide,
                             transparent: true,
-                            opacity: 0.8,
-                            roughness: 0.2,
-                            metalness: 0.9,
+                            opacity:   0.7,
+                            roughness: 0.48,
+                            metalness: 0.67,
                         })
                     break
                     case "MeshPhysicalMaterial":
@@ -182,7 +182,7 @@ export class TetraGUI extends GUI {
                             transparent: true,
                             opacity: 0.6,
                             roughness: 0.5,
-                            metalness: 0.9,
+                            metalness: 0.67,
                             attenuationDistance: 0.5,
                             ior: 2,
                             sheen: 0,
diff --git a/jsm/TetraScene.js b/jsm/TetraScene.js
index 141c71b..a577dc7 100644
--- a/jsm/TetraScene.js
+++ b/jsm/TetraScene.js
@@ -12,10 +12,10 @@ export class TetraScene extends THREE.Scene {
         this.vortex = new Vortex(loadingManager)
         this.add(this.vortex)
         
-        this.ambientLight = new THREE.AmbientLight(0xffffff, 1)
-        this.add(this.ambientLight)
+        /*this.ambientLight = new THREE.AmbientLight(0xffffff, 1)
+        this.add(this.ambientLight)*/
         
-        this.directionalLight = new THREE.DirectionalLight(0xffffff, 2)
+        this.directionalLight = new THREE.DirectionalLight(0xffffff, 1.8)
         this.directionalLight.position.set(5, -20, 20)
         this.add(this.directionalLight)
 
diff --git a/jsm/gamelogic.js b/jsm/gamelogic.js
index 63da272..e2ced7e 100644
--- a/jsm/gamelogic.js
+++ b/jsm/gamelogic.js
@@ -120,9 +120,9 @@ class Mino extends THREE.Object3D {
             envMap: environnement,
             side: THREE.DoubleSide,
             transparent: true,
-            opacity: 0.8,
-            roughness: 0.2,
-            metalness: 0.9,
+            opacity: 0.7,
+            roughness: 0.48,
+            metalness: 0.67,
         })
         this.mesh = new InstancedMino(minoGeometry, minoMaterial, 2*ROWS*COLUMNS)
     }
@@ -353,7 +353,7 @@ Z.prototype.freeColor = new THREE.Color(COLORS.Z)
 class Playfield extends THREE.Group {
     constructor() {
         super()
-        this.visible = false
+        //this.visible = false
 
         const edgeMaterial = new THREE.MeshStandardMaterial({
             color: COLORS.EDGE,
@@ -361,7 +361,7 @@ class Playfield extends THREE.Group {
             transparent: true,
             opacity: 0.2,
             roughness: 0.1,
-            metalness: 0.9,
+            metalness: 0.67,
         })
         const edgeShape = new THREE.Shape()
             .moveTo(-.3, SKYLINE)