I don't see how having more blue will give you reder reds...
if the wavelength isn't there to be reflected.. it can't be reflected...
and if its not reflected... than it doesn't look red.
Fed in Corals comes from two completly different sources.
Florescent Red which is basicly shorter wave lenght light that is absorbed by the chemicals in the corals and and excites these chemicals to create light at a shorter wave lenght. With Florescense and the right coral you can light it up with 460 nm blue light and will glow at 640 nm orange. My Predarn to Post Dusk lighting is all 454 nm Royal Blue light and many corals glow different colors including red and orange creating almost a cartoon look as the rest of the tank is nearly black.
The second sorce is reflected Red light which is what your thinking about. But reflected light is mucn more evedent in rocks and fish than it is in corals or even anenomies. Yes there are some corals that reflect light rather than floresce light but the most dramatic ones are very florescent.
Basicly the ideal is to have the perfect balance in light which is nearly impossible. If you bring in to much light on the longer wave lenghts you actualy start washing out the florescense of some of the corals. On the other end of the sectrum if you only provide light for the florescense the none florescent items in the tank become too dark.
Everyone has there own preference on what a good balance is. This is why some perople go with a ration of one Royal Blue to 1 Neutral wite LED, and other go as far as even 6 Royal Blues to 1 Neutral White Led.
My experimental frag tank is now running
Pre Dawn to prost dusk 4 Royal Blues and 2 Near IR's
Dawn to Dusk I'm adding in 4 Royal Blues, 4 Blues and 2 Aqua's.
Then for Mid Day I add in 4 Royal Blues and 6 Neutral Whites.
You could say Im running an overall ration of 3 Blues to 1 White considering all my blues are not Royal Blues.To me it is still too white, at midday.