Cotton Yarn，50% Cotton 50% Polyester-10.5oz，3 Pack ，Soft Yarn for Crocheting and Knitting (49 Ecru)

I’d suggest something like this: https://www.amazon.com/KITHED-Cotton-Yarn%EF%BC%8C10-5oz%EF%BC%8C526yard%EF%BC%8C3-Crocheting-Knitting/dp/B0DL4872C3 a lighter color that you like (dark colors are hard to see). It fits your hook size.