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
Low airways with fixes
Low, high and RNAV (fixes hidden) in all Central America