Thanks for the further info, Anchie. It could be the photos but it seems to me there is big difference in your hair color in this photo, versus the one you posted on the other thread with the short hair cut. With the additional info that you've had some yellowing due to chlorine, I stand by my suggestion to try a purple shampoo if you haven't already.
I'm using Aveda Blue Malva. As I said it does dry my hair out, so I don't use it very often, once a month tops, then again when I get it cut (as I'm now going to an Aveda salon). It makes a big difference when I use it.
My husband also uses it.
My blonde kids were on the swim team growing up, in the pool 6 days a week, and their hair would turn green over the season. I wish I could remember the shampoo they used to restore it. I think it was a Paul Mitchell brand?
That said, I think your hair is a glorious color. If it were me I might just postpone wearing silver tops for now! Love the idea of champagne for you.