Is this Gig Beyond Recovery ? Or has it Turned the corner ?

[Hot2na]

Background info ..this Gig and the one next to it were in a tank with a bunch of sick fish ,Fish were fed food soaked in fenbednazole . Tank went to hell after that , the gig and its partner expelled ALL zooxanthellae ... They were pure BONE white (zero trace of color) when I finally got around to breaking down their tank , and transferring them to a very healthy tank, as they are in now.. fed with pieces of squid to help them recover strength and size .. No Natural recovery of zooxanthellae after a few weeks , So I decided to do a ZOOX transplant with tentacles from another healthy gig (mixed it with pieces of squid they ate) .. it FAILED...then I did 2 more transplants over a 1 month period .. All hope was lost ..I thought I saw a very light lyme green look to the tentacles of both ...but still no "dirty " look to any part of the nem ..
So I have included a video here to see what anyone thinks : Is it showing a hint of color , finally ,based on what I saw today ? or is it BEYOND recovery ?

 

[Seancj]

Video is not showing up. Sorry to hear this happened.

 

[Hot2na]

It's all part of the game , during fishing season my tanks are on autopilot for a couple months .. thats when things like this happen ... can you see this one ?

 

[Seancj]

I do see some faint color so hopefully it is recovering its zooxanthellae.
This brings up a question I was going to ask, can a severely bleached gigantea recover, even if it's been bleached for a very long time?
I have the opportunity to purchase a 1 1/2 year captive, 14" diameter, blue/purple gigantea but it is severely bleached, just the slightest hint of very light blue at the tips. However, the owner says that it's been this "white" color for over a year! It is fully inflated, tight mouth, has maintained its attachment on the rock scape, tentacles are sticky, and it eats good size junks of thawed shrimp.
Price is fair considering its size, long term captive, the fact that it's sticky, fully inflated, and eating. However the long term bleached color has me concerned. I was hoping to buy it and bring it back to full color.