Coming in here a bit late too, but since nobody's touched the "yellow" part I might as well add my $0.02.
Agreed with phender, traveller7, et. al., the first is a gigantea. It is, unfortunately, a bit sketchy looking. The second is a haddoni.
But the part I wanted to mention, I don't think there's such thing as a yellow carpet (gigantea, haddoni or otherwise). These are most certainly bleached greens.
I wouldn't necessarily summarily discount the green one, they're so hard to find; but having said that, I wouldn't hold my breath on it coming back either.

I don't know, I have two gigantea's myself, I'm not sure why I didn't really have a huge problem with them when others had, but realistically they just kinda adapted and did OK. Although the green one did have a few hairier moments in the first few weeks than did the brown one. It figures, the more colorful they are, the fussier they are. Why is that? I mean, there's Murphy's Law of course, but I wonder if there's something more. Like, they're more specialized to some environmental parameter.. I dunno.
Amazing LTA BTW.
Oh, one more thing. I noticed you mentioned that you would consider a magnifica instead. Be careful with this one. I too came to that conclusion, after a number of years of fruitless searching for a gigantea, I gave up and said "well why not a magnifica, they're easier to come by". Let me tell you, these things are beasts! You really have to know what you're getting yourself into, and I know this sounds a bit trite, but honestly, you *can* find yourself in the situation on the trailing edge, "If I knew what I was getting into, I might not have gone ahead with it" despite how emphatically you may feel at the leading edge that you DO know what you're getting yourself into.
I still have my magnifica (over five years later) but it has not been without a fairly high cost along the way. For one, mine *really hates* being moved. So much so, that generally speaking, fish just drop dead because it releases invisible death if handled in any manner. I've had 3 almost complete tank wipeouts due to the anemone being needed to be moved .. the only way to prevent it, it seems, is to remove all non-anemonefish from both the tank it comes OUT of, and the tank it goes into, and for at least a week after the actual move. I'm not exaggerating. The emotional cost of "I just lost all my fish" is something I really wouldn't wish on anyone. So.. um .. yeah. I'm not saying "don't do it at all" but I am saying "be warned, you know not what you are wishing for."