The headpiece is just to never need to turn off headpiece visibility when swapping looks - making it the same as skin color makes it invisible. Sylvari males have two hairstyles appropriate to trunks - I chose the ponytail just out of preference.
The chest piece has purple on the back and shoulders, which breaks the "black jacket" immersion attempt. I use black pauldrons to cover up the shoulder patch, and a Lightning Catcher to mask the purple on the back.
Make sure to carry an unadorned greatsword for Z Sword action! Guardian and Warrior both work, though Hundred Blades is especially thematic.