Case $7-1$

Oscar owns Oscar's Skateboard Shop. He wants to create a web form to allow users to specify the type of skateboards they would like to buy. This includes the make, model, type and color, and board options. Oscar's skateboards come in Children, Young Adult, and Adult sizes. Oscar's skateboards come in different colors, patterns, and themes. He has over $25$ makes and models of skateboards.

Oscar$$s skateboards are manufactured in different hues. Which of the following features should Oscar add to allow customers to choose a shade of their choice?