If they are perennial Impatiens I see no reason why you should not carry them over winter indoors. Crock the pots well for good drainage, pot them up with as much root on as possible using the soil they are growing in and keep in a cool, light and frost-free place. Give little water after the initial watering in after potting up.

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I have been selecting bi-colored impatiens seedlings for several years and bringing them inside. If your soil is clay or otherwise does not drain well, you may want to use a commercial potting soil. If they are in a low light location, minimal water and a cool (not cold) environment is best. If the colors are really special, I would also root some cuttings to increase the odds of some surviving.