Aloha! Koa wood lounge chair ID?  

Reminds me of these Edmund Spence chairs by "Urban-Aire."  It obviously isn't one, but perhaps earlier or later....
http://paulmccobb.blogspot.com/2013_09_01_archive.html
And the wood doesn't appear to be Koa in the photo, but I can't really see it.  Walnut if I had to guess.  If you take some sharp close-up photos, someone here might be able to tell you.   

Here's a close up of an area that was cleaned. Looks maybe like two types of wood? The darker could be koa, and the other not so sure? Posting another photo of the chairs as well. Thanks for your help identifying!

The darker wood could be Koa. It could also be Kiawe (Mesquite), or any number of other Pea family tree woods.