[mimika]

for professionals like ayu, they don't usually just dye 1 color

first of all, they dye a base color, which can be a mix of different shades to fit ayu's skin tone, the time of year, etc etc

than they dye highlights on her hair, again that depends on a number of factors

so it's really hard to just go dye your hair based on the shade ayu did....wat I think would fits you is to take pictures of ayu's hair and show it to your hairstylist, let him/her knows what you want and ask him/her to find the shade suitable for her that resembles ayu's hair