Hi just after abit Of advice when toning bleach blonde hair to a ash blonde. My client currently has bleached hair done by me previously. She’s not send me a picture of what I would say a grey/ silver. But she’s said she wants it more ash than grey. (I’ve attached both) her natural base is a 5. But when I do the ash I will be giving her a root stretch. So all I need advice on is what colours u would recommend to use to achieve a light ash blonde without it having the muddy green colour. I use wella so if u could give me some colours in wella that would be great