iPod nano cases that change color - automatically

Can't decide what color case to choose for your iPod nano? What about a white case? Okay, how about a case that changes color then?

Proporta's color changing iPod nano just do that; though currently they only change from a color to white, as the temperature rises or decreases; turning lighter as it get hotter and vice versa. The moulded case also protects the iPod nano and is currently available from Proporta in hot pink, deep blue and charcoal base colors for USD 19.95.