Using python define a function that uses a turtle object to do a random walk. The turtle will start at a point specified in the parameters. The user is to instruct the turtle to randomly pick a random color of pen, move forward by a random distance, and turn left by a random angle.

Define a function that draws a pattern that resembles a firework. Define the function to use parameters to increase its reusability and to use random values. Do not use conditional statements.