Attribute Validation Module for Zen Cart

I need a module for zencart that lets me show particular option values base on what the person chooses previously. For example..I sell tshirts Right now I have Size,Color and Style options for each of this option names I have values...but what i need is for example when somone selects sweatshirt as style I only want the colors i carry in sweatshirts available in the colors options. Right now zen does not support this. In zen now you can put in options but they do not validate what the users have picked previously. I need this in a module format so when zen is upgraded i can move it around as well. I do not want to spend a fortune and i imagine this is not that big of a deal