FYI on UV based LEDs....
They don't put out much lumen, which in our world... is very little to almost no PAR.
It would take two to three times the amount of UV based LEDs (in relation to the whites) to get any penetration and color to the mid to bottom corals in the tank. I don't have any scientific facts on this... it's solely based on my testing of LEDs, and using a PAR meter to measure their output. I've ordered LED fixtures with 420nm LEDs and removed them. I've since tried the very costly and truer UV spectrum of 350nm, 360, 380 and 400nm, and other ranges to see if any PAR can be measured from just those "UV" spectrum ranges... and, with what I'm using (a photodiode, not calibrated to UV ranges)... it's not measurable. And to our naked eye, true UV is just out of the visible spectrum or one of the shortest wavelengths. For example, the next shortest wavelength from "UV" is X-Ray.... so, you see where I'm going with this information.
Honestly... I think covering 3 to 4 colors has been successful in my tank. That coloration ranging from 440nm to 12,000K and using LED Chips of 440nm, 460nm, 6700k, and 12,000k (anything above 12,000K is filtered out fairly quickly by the water depth).
Hope that helps whoever is ordering LEDs above the standard "white and blue".