FEATURE: Hightlight Missing Variant Selections

When adding to cart from the product details page, missing variant selections now apply the CSS class “needsSelection” so that highlighting can be applied.

NOTE: to use this feature you would need to add something similar to the following to your css.

.needsSelection { 
  background-color: #FFAFAF; 
  border: 1px solid #8F2323; 
  color: #7F0000; 
}