Add size and color to my products

I have an e-commerce website. written in native php and custom back end. I need to ADD size and color to the items database and show the size and color as a drop down menu in the website. 1-Add size and color to the items in admin where we can add the options available for each item from the admin side. 2-add size & color drop down fields to front end (if not NULL) in item details page so user can choose te color and size he needs. 3-add size & color to cart to show the user choice 4-add size & color to the order email that the user ordered 5-need to add size and color chosen in user area > orders, and in admin area > orders 6- we need to check the json file and also add the same size and color available Time: 1 day Budget: $25 Please make sure you read and understand my requirement before bidding.