In my experience, pale corals can be a sign of a lighting issue or a lack of nutrients issue. Feeding zooplankton can help with the latter.
Offhand I'd say 8 bulb 60" t5 fixture should be able to light a standard 125 nicely. What bulbs are you using? Any chance of getting some par measurements where your pale corals are? Have the corals been under those lights long? Or are they still acclimating to them? Did they come from a tank with a substantially different lighting setup? What is your lighting schedule?
Many people have issues bleaching corals when switching over to leds. How long have your led strips been in operation? Was your color better before you installed them? With a 8 bulb t5 primary fixture the leds may not be necessary from a par standpoint.
Pictures would help.