Can winter whites be "tricked" (like bulbs) to change colour?

You know how bulbs can be tricked to flower by keeping them in a fridge? I was wondering if winter white hamsters can be tricked to turn white by making their surroundings colder. BTW, I live in a tropical country, so I don't know if they do so automatically in winter...Can winter whites be %26quot;tricked%26quot; (like bulbs) to change colour?actually it should be the ammount of light not cold air that makes them turn.
Can winter whites be %26quot;tricked%26quot; (like bulbs) to change colour?
Gradually reduce the amount of lights.