Show Attribute Adjustment alternate SKU rather than Option text

By definition, the option text is always the same for each product.

We're building a designer sunglasses store and each pair of sunglasses comes with a range of options. Unfortunately these options are not just different colours, they're more... different styles, so we can't really say "Red", "Green", "Blue" and so on.

So, what we've done is named the options as Style 1, Style 2, Style 3 and so on and we have put the real names (some examples below) in as the SKUs. It would be great if, instead of showing Style 1, Style 2, etc. in our dropdown or radio buttons, if we could show the SKUs instead. Is there an easy way to make this happen? Prepared to have to hack the file if necessary, unless there is a more elegant solution that anyone else knows of...?

Examples of SKUs:

EA 9575/S 1AL (PB) - PNK TRPK (BURGUNDY SF)
EA 9575/S 1UN (DG) - VIOLILVIO (GREY DS)
EA 9575/S D28 (E5) - SHN BLACK (GREY)