One attribute based on another attribute?

[Ripper]

Hi, I have a cart that sells t-shirts and other apparel. For some t-shirt colors, certain sizes are not available. Do I need to make a set of attributes for each item, list each item separately or can I selectively eliminate certain options based on other attributes? For example, a plain black t-shirt is available in small through XXXL and the same plain t-shirt in red is available from only small through XL. I currently have XXL and XXXL available as attributes whether you choose red or black. I can't rely on the customer to realize the size is not available if it is listed as a choice. I can add an entirely new item as the red t-shirt, but it seems redundant. Am I missing something?

[kobra]

Have a look at the 3rd party plugin "Stock by Attributes"