Two thoughts; one practical, the other aesthetic.
First of all, when things are far away and in constant motion, it's important for a player to grasp--at a glance--what they are and what they're about, to prioritize the targets or suchlike. Lighting being what it is, we have to rely on silhouette, instead of color (or glow), and the elaboration is *a* way to make the elite stand out. In WoW, one of the reasons to hunt end-game things is the pretty colors. In other games, the Armor Class is reflected in armor's visual bulk, not its weight.
That said, exercise some restraint, for the love of god. Of war. Too many geegaws make a mess, not a display, and it really does look like someone sat down to design the armor and never f___in' stopped. If there are no spare blacksmiths, magic-forgers with nothing better to do, or animals with horns that look like that, then I, as the reader, can't just shrug it off. Maybe make it seem spare, to reflect an ascetic culture, or rusty, if things have decayed, or go overboard with "found" items if it's Mad-Max-ish, but have it fit the story.