Scisms' If it werer easy to change red glow to black IR then all the manufacturers would be doing it. It is possible to change out the LED's for different wavelength led's but you end up with a very poor performing camera. There is more to it than just the LED's. Some of the manufacturers are palying with different tinting on the LED array's to give the appearance of black flash or nearly black flash. To my knowledge, there is still only 1 company that has true black flash, reconyx, and they are very expensive. I've also been told that some people can see the flash on these.... Don't knbow for certain, they're too rich for my blood.
“There are two spiritual dangers in not owning a farm. One is the danger of supposing that breakfast comes from the grocery, and the other that heat comes from the furnace.”
― Aldo Leopold, A Sand County Almanac