Not currently in the way that you are describing. This is a subject called "stock & pricing by attribute" and is not currrently part of the Zen code.

There are a couple of alternatives that you could investigate:

Cross Sell is a mod in the downloads section that allows other zen products to be listed with the one you are viewing. Using this you would link the others with the product you want. There is a limit of 6 as I recall. each product would be entered uniquely and you then cross link/sell what you want.

Other is not very eloquent but you just have a separate listing for each