I suggest adding a new NPC merchant that alters your armor’s color.
Right now there are plenty of great armor sets, however due to color differences many sets do not mix well visually
For example the Captain’s Armor and the Crestfallen Knight Helmet. The captain’s armor is primarily Cyan while the crestfallen helm is white and red.
The NPC could give you the option to alter the helmet to white and cyan for example, and the option to alter the captain’s armor to primarily red/white
This is a great way to offer the players more options on the visual aspect of their characters without having to add additional armor sets.