The Divine Order of the Phoenix are the ruling organization in Garuda. The King of Garuda runs the nation spawning organization along with The Ring of the Chosen, descendants of the original founders.
This is how some of the Karu in the Divine Order dress. The unofficial national colors are yellow and green, and you can see how it makes their uniforms really pop. It has this awesome regal feel!
It definitely suits the dignitary look that goes with them along with the more elaborate wear.