list of items in a field

Hi,
a simple question from a newbie:
I have a table of products for a shopping cart. I want to give the
user to ability to select, for example, a color for a certain product.
How can I set up my database table so that certain records can have a
number of options available to them. Is there a data type like a
"list" where I can list the options? I thought adding a field that
when set would indicate the presence of additional options, which
would then indicate that I should check for additional options.

Thanks a lot.