diff --git a/jsm/TetraGUI.js b/jsm/TetraGUI.js
index f4bf72f..f0ceffc 100644
--- a/jsm/TetraGUI.js
+++ b/jsm/TetraGUI.js
@@ -87,13 +87,13 @@ 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.directionalLight, "intensity").name("directional").min(0).max(20)
+            light.add(scene.ambientLight, "intensity").name("ambient").min(0).max(20).listen()
+            light.add(scene.directionalLight, "intensity").name("directional").min(0).max(20).listen()
             
             let directionalLightPosition = dev.addFolder("directionalLight.position").close()
-            directionalLightPosition.add(scene.directionalLight.position, "x")
-            directionalLightPosition.add(scene.directionalLight.position, "y")
-            directionalLightPosition.add(scene.directionalLight.position, "z")
+            directionalLightPosition.add(scene.directionalLight.position, "x").listen()
+            directionalLightPosition.add(scene.directionalLight.position, "y").listen()
+            directionalLightPosition.add(scene.directionalLight.position, "z").listen()
         
             let vortex = dev.addFolder("vortex opacity").close()
             vortex.add(scene.vortex.darkCylinder.material, "opacity").name("dark").min(0).max(1)
diff --git a/jsm/TetraScene.js b/jsm/TetraScene.js
index 3e7efdd..1d33d46 100644
--- a/jsm/TetraScene.js
+++ b/jsm/TetraScene.js
@@ -49,14 +49,17 @@ export class TetraScene extends THREE.Scene {
             case "Plasma":
                 this.ambientLight.intensity     = 0.6
                 this.directionalLight.intensity = 5
-            break
+                this.directionalLight.position.set(5, -20, 20)
+                break
             case "Espace":
                 this.ambientLight.intensity     = 20
                 this.directionalLight.intensity = 10
+                this.directionalLight.position.set(5, -20, 20)
             break
             case "Rétro":
                 this.ambientLight.intensity     = 1
                 this.directionalLight.intensity = 10
+                this.directionalLight.position.set(19, 120, 200)
             break
         }
         this.vortex.theme = theme