Optimum balanced light spectrum

[Prenton]

I have a 300 litre system primarily containing Zoa's, i have 3 aquaray LED lighting tiles, 2 reef white t5 tubes and 2 t8 actinic tubes delivering high PAR readings consistently across the tank. The general health and growth of my corals is pleasing but I am frustrated with the lack of display of vivid red, purple and blue colourations within my zoa's. Has anyone any advice on what successful light balances they have used to achieve aesthetically pleasing colour renditions? Hello to you friends and many thanks!