If you really look at sunlight, it has a yellowish tint. Likewise, shadow is blue. You can see that in this painting. The streetlights in the shadow are blue, basically because they are in the shadow and they reflect the color of the sky above. As you go farther in the painting, the lights turn yellow because they are in the sunlight. There is linear perspective because the sidewalk gets narrower the further into the painting it goes. There is atmospheric perspective because the cars are more detailed up closer than the ones in the distance. Also they are larger up close than the ones in the background. These things give the painting depth. You feel like you could walk down the sidewalk.