Perharps, I'm currently researching it, I found some things, but I need time to organize and translate the information, from what I've read, the weapons and tactics, if not the ¿decorations? were more or less the same, at least in the area that is now Costa Rica (my area of expertise).

For what is worth though, the Huetar people were influenced by both, mesoamerican and intermediate area peoples, but due the area's poverty (of minerals) and isolation not many professional chroniclers came here, and a lot of the information about that time period that wasn't lost comes from goverment employees, friars, soldiers, etc.

And they were often kind of ignorant and biased about their ways, so we can only take their word for it, and even then, only with a grain of salt. The rest can only be guessed from things like archaeological remains, the oral tradition and comparisons with neighboring cultures since the Huetar culture was virtually obliterated.

Edit: neighboring cultures did practiced human trophy collecting and wore paint and gold in war, at least according to their oral tradition.