I agree it looks best at dusk. You can still see the three dimensionality of the diamonds but with the added bonus of the lighting.Thats what I'm talking about.
Contrary to many here, I don't think LED strips would look better; at least not if they were all solidly lit at the same intensity. Maybe if they faded between the points to offer a similar effect but just more visible, but I really think a solid lattice of LED strips following the lines between the diamonds like the Bank of China Tower would look worse. It's not the effect they're going for here.
In a rare occurrence, the lighting in the renders looks a lot like the final product: