The scene is an intersection of the street, with a stop sign in the middle and a crosswalk to its side. Red-toned cars are seen stopped at the stop sign and people are crossing the street in the white lines of the crosswalk. Across the road is a yellow triangle-shaped yield sign. To give the image more depth, I suggest coloring the sky blue and the ground using a combination of yellow and light brown. The street can then be given a dark grey or black tone, and the red cars can be colored a few shades darker than the stop sign. To make the scene look lively and vibrant, the occupants of the cars, as well as the people in the crosswalk can be given cheerful colors. The stop sign and yield sign can be highlighted to make them stand out.