Lol. You can hop over there, chances are , it'll be me answering. But I won't be hurt if you want other opinions
The color choice unless you dig reallly really deep in science and become a nerd like me, is really just visual preference. Its get complicated past that.
Intensity and duration matter most.
What I usually reccomend is set the peak color by eye and then set the intensity and par with either meter. A slightly loewer intensity will give you a longer photoperiod.
And each the coral, as some may Be lower light. Every one usually finds the sweet spot , even with a meter it can be a best guess.