What is considered dark corals in the zeovit system?

[daniella3d]

I have a high nutrient system with 0.25 of phosphates and my corals are quite dark yet they are very colorfull. exemple of non-anorexic corals:













and these are anorexic corals that were kept in low nutrient system when I got them, very pâle color, almost bleached:



The same coral after a month in my tank:



Again when I got the coral, very pâle:



and after a month in my tank: