Granted you should have your environment within reccomended range. I.E. P04 < .05 IMO.. Nitrates... I know guys that have 20ppm Nitrates and their colors are amazing... I'm still on the fence about 0 nitrates or having a few. Depending on the species of SPS the ultimate water conditions vary and its fairly impossible to have the BEST coloration in ALL your corals at the same time.
Any time I add a new coral to my tank there is definatley a color shift 99% of the time. I think this is influenced by several things. (Lighting, Flow, Nutrient levels, Tank Chemistry Diffs). Some corals color back up quickly and others take a longer time. If I were you I'd give it a couple months. Take pictures of them so you can see the diff over time. When you see them every day you cant really tell how they are changing. But most of all make sure your basic parms are in line. If you have high Nitrates and P04 of course your gonna have brown corals.
As far as Zeo colors go, Its a little annoying to me when people immediatley assume Zeo = washed out, pale corals. Zeo is just like any supp program. You can tweak your corals coloration in any which way you prefer. There are MANY supps that do different things. Some make colors darker and some lighter. Also I think some run their Zeo harder than others and makes their tanks nutrient defficient. Personally I dont like it. That is why I do NOT do Zeo supps that lighten. These would be B-Balance and Zeospur. Sponge Power, Amino Acids and Pohls-Xtra are my favorite supps from Zeo.
I like DEEP RICH coloration. I would like for my coral to have the deep rich AND the irridecence (sp) achieved from using some supps. I'm NOT afaid of feeding either. When I'm home I feed the living heck out of my tank. Some of my fish are darn near obese. Otherwise I rely on my auto feeders when I'm out of town.
