[Python] Attempting to change the square color that's printed

I'm attempting to change the square color that comes out to what the user inputs when I run the code in the terminal, right now in turtles the color of the squares that comes out is black regardless of what color that I input. How would I go about rectifying this please.

if __name__ == "__main__":
pen_size = int(input("Enter the pen size: "))
color_options = ["red", "blue", "green", "black"]
print("Choose a pen color:", color_options)
pen_color = input ("Tom.pencolor")
square_size = int(input("Enter the size of the squares: "))


draw_squares(pen_size, square_size)


(https://i.sstatic.net/08dcnICY.jpg)

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