diff --git a/scripts/3d_model_viewer.js b/scripts/3d_model_viewer.js
index a2fc4a5..1fba9c8 100644
--- a/scripts/3d_model_viewer.js
+++ b/scripts/3d_model_viewer.js
@@ -273,7 +273,7 @@
                 if (RENDER_MODE === "em") {
                     return new THREE.ShaderMaterial({
                         uniforms: {
-                            uColor: { value: new THREE.Color(0xd6d6d6) },
+                            uColor: { value: new THREE.Color(0x66ff88) },
                             uLightDir: { value: new THREE.Vector3(0.6, 0.9, 0.4).normalize() }
                         },
                         vertexShader: EM_VERT,