Zend certified PHP/Magento developer

Add Atribute to “Bulk Images, Price and Quantity” in configurable products

I would like to add a custom attribute to the configurable products as a unique value per product. (Step 3 Bulk Images, Price and Quantity) It now lets me set images, price and quantity in the product configuration, but i would also like it to include shipping time as a separate value per product, as the shipping time can divert per product. for example, the color red is on “direct stock” (status: delivery within 24 hours), and the blue one is “on order”(Status: Delivery within 5 days)

I need the configurable product to look to the attribute of the simple product and show that value on the storefront.