It's awlays fun to shoot at night when you have some lights to play with to see how the colors plays off of the lights and how the light bounces off objects to create colors. It's also fun to experiment with aperture settings at night and to create starbursts by closing the aperture really tight. It oftens adds a new dynamic to the photo and is actually more closely resemble how your eyes see the lights at night. Next time pay attention to how points of light become starbursts. Photography has always made me wonder what camera settings our eyes are on at different points of the day or looking at objects from varying distances.