Mention the word Varinas to just about anyone who knows fashion and you’ll see their eyes light up in recognition. After all, the humble but well-loved ballerina flats from Salvatore Ferragamo have since become a classic wardrobe staple, not unlike its heeled sister shoe, the Vara, which dates back to its beginnings in 1978.

Salvatore Ferragamo introduces thermal-dependent Varina flats

These were no-nonsense, sensible shoes that women could walk in all day and still look impeccably put together, all thanks to its signature grosgrain bow fastened to the coloured leather upper.

It might be that Ferragamo is looking to shake up the image of their Varina ballerina flats, which is why it has been given a snazzy, somewhat tech-y update for Fall 2012.

Salvatore Ferragamo introduces thermal-dependent Varina flats

Named the Day-to-Night Varina, these special ballerina flats are made from a patented thermal leather that will morph from a leopard print in the heat to a shiny black when the weather cools, essentially changing with the time of the day.

This doesn’t mean though that the shoes will strictly remain printed in the day and end up a solid black at night. As these Varinas are heat-sensitive, they will transform depending on your body temperature or the weather of the day, which means they might end up black on a cold, rainy morning, and remain printed on a warm, balmy night.

Salvatore Ferragamo introduces thermal-dependent Varina flats

We can’t decide which we like better, the blush pink pair, the concrete grey one or the wine red, but priced at a fairly decent $690, it won’t hurt to get two pairs will it? Now, who said a leopard can’t change its spots?

Salvatore Ferragmo stores are located at Takashimaya, Isetan Scotts, Ion Singapore, Paragon and The Shoppes at Marina Bay Sands.