Update viewer.js

viewer.js

@@ -230,7 +230,7 @@ export async function initializeViewer(config, instanceId) {
       const grilleTex = loadImageAsTexture("https://huggingface.co/datasets/MikaFil/viewer_gs/resolve/main/ressources/textures/grille_cadrillee_4k.jpg", app);
       let matSol = new pc.StandardMaterial();
       matSol.blendType = pc.BLEND_NONE;
-      matSol.emissive = new pc.Color(color_bg);
+      matSol.emissive = new pc.Color([0.1,0.5,1]);
       matSol.emissiveMap = grilleTex;
       matSol.emissiveIntensity = 0.1;
       matSol.update();