This coloring page features two large tanker trucks, one red and one yellow, situated next to one another with their engines running and hoses connecting them to adjacent hydrants. Around them, an array of firefighters and police officers stand chatting with one another. To give the scene more life, try using cool colors like blues and purples for the fire trucks and hydrants, and leave the people a warm yellow for their uniforms. Bring out the contrasting effect between the two trucks by using fiery oranges and pastel pinks. To finish, add accents of green to the scene to give it a sense of serenity.