DEBUGGING: Using input as a list index might result in an index that doesn't exist! We can fix that with modulo.

• Click Run and enter a number that is greater than 7. What happens? Read the error message.
• It says "index out of range" because the index is too large! The maximum index for color_list is 7.
• Find the line where we first use index and change it to this: index = user_input % len(color_list)
• Click Run again and enter any number greater than 7! What happens now?

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