This picture is of Barbara Gordon from LEGO Batman, a heroic character all superhero fans are familiar with. Her bright, reddish brown hair has been pulled back in a neat ponytail, and she's wearing a dark blue outfit with a yellow bat symbol on the chest. At her waist is a utility belt full of gadgets and tools. In her right hand, she is gripping a black gun, ready to use it if necessary. To color it, I would suggest a very light yellow for the bat symbol, a brighter yellow for the utility belt, a vibrant blue for the outfit, and a medium brown for the hair. For the gun, use a bright, glossy black to make the color stand out. Finally, add some shadows and highlights with gray or black to bring the colors to life.