Well I do own this device , and I can replace as test, the inner UV tube ,
with one PCB long enough , with deferent colors of LED's .
I am thinking to actually try it out , because I can hardly find , replacement tubes ,
worthy as the original one , that came with it.
I will do something powered with batteries (rechargeable ) , and if it works,
I will do something permanent.
The color choice of LED's , from the above document , looks to be White - Green - Blue.
The high voltage grid , works fine .