Yep, I was after that one too, but the seller went unresponsive. You win some, you lose some. Haha yeah, asking to pull of cap might've tipped the boat. Best to make things as simple as possible. I mean, it's a hell of a price any way you cut it.
Yeah, the indicator labels can yellow on most boards. Was that material mylar or something? Either way, once they yellow, there's nothing that will restore them. Retrobrighting won't do it.
My Focus FK-555 is the only one of the FK-555s I've seen that doesn't have a yellowed function row strip. Most of them are beige.
Good find. These can be SKCM White and SKCM Orange from what I have seen, but by all likelihood, it's going to be SKCM Blue.