I sell items that come in various colours (around 20 different colours) and I sell them both individually and in product bundles of up to 6 items per pack. So I have 6 different products on my site - 1 pack, 2 pack, 3 pack, etc up to a 6 pack. For each pack, the customer can choose the colours they would like. This could be any combination of the 20 possible colours, including multiples of the same colour in one pack. I am currently using the app Infinite Options to create the product bundles and optioning for the product page and it works well for that purpose, however the app doesn't track the inventory of the underlying items making up the bundle. Is there an app that will track inventory in that way? Or is there another work around?