Here is what I have from an e-mail:
From: Stover, Steve MAJ OCPA
Subject: Army Combat Uniform (ACU) Ensamble (Unclassified)
5E. Boots. Army combat boots (hot weather and temperate weather), and optional boots.
5E1. Army combat boots made of tan rough side out cattlehide leather with a plain toe and tan rubber outsoles. The boots are laced diagonally with tan laces, with the excess lace tucked into the top of the boot under the bloused trousers, or wrapped around the top of the boot....
11. This message has been atuhorized by the Army G-1.
12. HQDA POC for the uniform wear policy is SGM Katrina Easley, email@example.com, DSN 426-5129, commercial (703) 696-5129
13. This message expires upon publication of the next AR 670-1 update.
I don't know if this will go into the new regulation, but the Big Red One goes by this pretty strictly, and it is board question material. I hope that helps.