this is nothing new,, the concept has been around EDF for over 4 years
a guy had LEDs inside the tail pipe of his WATTAGE F86 if you looked at one it has big cheater hole on the bottom,,
it had rained for a little while ,,when he took off from the runway
he notice the exhaust was lightning up just like AFTERBURNER effect
as he kept flying the drops that had splash from the gears kept going into the cheater hole
later he put an eye drop bottle with a vent dripping in to the front of the fan
I guess this the first time done on a turbine,, the AFTERBURNERS LEDs have being around for a while on electrics edf
I believe it was RCgoups will do a search
LOOKS GOOD