Place paper towels under the jacket to soak up any nail polish remover that may pass through the fabric.
Soak a piece of paper towel with nail polish remover and dab it onto the spot. Avoid applying the nail polish remover to any other area of the jacket.
Repeat the process with a fresh paper towel until no more color comes off of the jacket material.
Rinse the jacket in water to remove the nail polish remover from the jacket.
Spray the jacket with a laundry pretreater and wash it in the washing machine per the manufacturer instructions.