Too much or not enough light?

[FWTXReefnerd]

I got this dark purple acro from the LFS & it got really light brown after acclimation/adding to my DT. It’s been a few weeks and it’s still light brown. Is this an indicator that I have too much or not enough light?

 

[mikereefing]

Are your water parameters stable? What's the PAR at that location? I looks a lot paler than what you described...might be bleaching slightly. It looks like you might have a bit of a cyano issue going on? That could add additional stressors as well.