Single SKU issue

HI! We’re setting up our shop and we’re trying to figure out how to manage the following issue:

– We sell hair accessories and a single product may have multiple color/size combinations. For example, a given hair clip may be available in red or black and in sizes S, M, or L. So the following combinations are possible: Red S, Red M, Red L, Black S, Black M, Black L

– It is hence ESSENTIAL that each product combination have its own SKU. For example: Red S SKU 001, Red M SKU 002, Red L SKU 003, Black S SKU 004, Black M SKU 005, Black L SKU 006

– The problem is that WP e-commerce does not create unique SKU’s for each of the combinations. They just have 1 SKU for all of the combinations for a particular product.

We are looking for possible solutions to create separate SKU’s for each product combination. Any help is much appreciated. Thank you.

PS: I think that it’s just incredible that WP programmers did not account for such a basic thing… we use WP to set up e-commerce site after all! We should be able to assign a stock value to each of our product… man! Anyway… please help…