Is the effect any brighter than EL wire?
I havent seen a TRON so dont know just how bright the RGB is, but if i was to do it, id be putting 60 or possibly 96 LED per metre RGB flex strips inside a frosted or opal acrylic tube.
There are 2 main types of LED strip available.. 3528 LED or 50/50... the 50/50 is 3 times the brightness of 3528 and is a 3 chip product rather than single chip.
50/50 LED will be approx 14W - just under 20W per metre