Forget about the color, that WD looks pretty bad in the first photo. I would step back and exam all of your parameters and stuff. Forget about PE... there is nothing and the skin looks thin. WD should be hairy even with nippers in the tank - this is a hairy coral. Are you sure that is legit WD? I would expect more pronounced radial corallites, but corals can grow weird when they are small.
First, if you want solid acropora, then get that dKh down to about 8, although 7 would be better. Keep the calcium at 425 and find a way to dose so that it is rock solid. Calibrate your refractometer and check your heater using something with mercury in it. I would keep your N near 5 and P detectable, but low (like .03 to .05, or so) - don't chase if you are close to this.
Once you get all of this figured out, you do need some trick lights to make WD look like the photoshopped pics, but your reef bar should take care of that.