Update viewer.js

viewer.js

@@ -201,7 +201,7 @@ export async function initializeViewer(config, instanceId) {
     glossyRedMat.useMetalness = true;
     //glossyRedMat.useDynamicRefraction = true;
     glossyRedMat.refraction= 0.8;
-    glossyRedMat.refractionIndex = 1.5;
+    glossyRedMat.refractionIndex = 0.5;
     glossyRedMat.thickness = 5;
     glossyRedMat.thicknessMap = thickness;
     glossyRedMat.opacityMap = op;