I was more aiming towards if you have a problem with LEDs burning out you can't replace them without replacing the unit or sending them back to the manufacturer to get it fixed as well as I said--IN NON DIY UNITS---No matter if you "could" open them up and solder in new LEDs I would never do it. There's a reason soldering is automated, the human hand is not nearly steady enough to do as good of a job. You also need to be able to make sure you don't overheat anything with the iron being too hot. Another thing robotics and automation outdo humans on hands down.
And no. You can't change it to the extent you can change a t5 fixtures spectrum. I don't care what anyone says. There's a limited amount of uv, green and cyan LEDs in a fixture that it doesnt compare in my opinion.