Woocommerce grouped product (Sku's not displaying)

Hello —
I am working on a website and added a grouped product via woocommerce, however, my Sku’s or color is not displayed. Could someone please let me know how to fix this? Thank you!

You can view the product here:
http://bookemcreative.com/testsite/product-category/pocket-cards/regal-pocket-cards/