Update viewer.js

viewer.js

@@ -230,7 +230,7 @@ export async function initializeViewer(config, instanceId) {
         tubeTransparent = new pc.StandardMaterial();
         tubeTransparent.diffuse = new pc.Color(1, 1, 1);
         tubeTransparent.blendType = pc.BLEND_NORMAL;
-        tubeTransparent.opacity = 0.15;                         
+        tubeTransparent.opacity = 0.05;                         
         tubeTransparent.depthTest = false;
         tubeTransparent.depthWrite = false;
         tubeTransparent.useMetalness = true;