I have zero knownledge about Java and OpenLayers3, but i modified my dump1090-fa fodler for show fixes and airways, and i modified he buttons for delect (hide) this information.
I hope that Flightaware make a new friendly piaware versión with more (and much more) options…
In image you can see RNAV airways (purple), highairways (red); fixes are hidden. In panel in this momento are not functional SIDs, STARs and Visual
https://s29.postimg.org/tvyn1kpdj/image1.jpg
Low airways with fixes
https://s24.postimg.org/57b5km6x1/image3.jpg
Low, high and RNAV (fixes hidden) in all Central America
https://s28.postimg.org/dwg2z5p8t/image2.jpg
idoleo2001