I’d still like to know, but I have been playing and have managed to lighten it to a much better look, it wasn’t bad before but indoor light it could look a little too yellow, but not all that far away from a normal gold plate I compared against, using very light passes you can use silvo wadding and a soft toothbrush to help with the jubilee inners using the fluid left from the wadding, the trick is being very gentle and do a little at a time, the bezel is best done off the watch and the crown but the crown is not so bad. It looks much better now. It will have removed a light top coat of the sting but not all that much depending on how heavy or many times you try it.
If it was a daily wearer then a fresh plate would be worth it although the plating used nowadays is far better than days of old so less likely to wear if kept clean from greases and other contamination.
The only part I’m not sure on is the insert as I think it’s too dark but pretty close to the gen which I think is too dark also