Update app.py

app.py

@@ -52,7 +52,10 @@ def sample_info(sample_id_str, fieldn):
         vertex_colors = m.to_rgba(field)[:,:3]
     else:
         vertex_colors = 1+np.zeros((field.shape[0], 3))
-    
+        vertex_colors[:,0] = 0.2298057
+        vertex_colors[:,1] = 0.01555616
+        vertex_colors[:,2] = 0.15023281
+
     # generate mesh
     trimesh = Trimesh(vertices = nodes, faces = triangles)
     trimesh.visual.vertex_colors = vertex_colors