Some buildings used crystal blocks of a single color, while others were constructed with assorted gems. It made for a koladioscope of colors. It made it look as if the city was built with colors given shape.
There was no sun in the sky, but the divine realm was completely bright. There was no shadow anywhere, and everywhere was lit by an unseen light. The amount of light further enhanced the beauty of the city. They are sure that the city would glow in the dark as it is, so it doesn't need light, but the light made the gems, transparent and translucent crystals, and colorful stones pop.
Legion didn't gawk though. At least not all of them. Four of them did the gawking. They stared at different directions and fed the others what they saw. The other 5 were looking around for important details like the appearance of other gods, their number, and what they were doing. They were able to create a complete mental image of the city around them that way.