Hi guys. Could you please give me your opinion. I've got client who has very light blond h/l. She's base 4-5. She'd like very cool ash silver balyage.up until now I've only used 10/81 color fresh for toning. I've tried 10/8 koleston +1.9% pastel on my hair just as a trial and it went very matt and slightly green. Lifted base a bit (I have warm blond h/l plus honey base). I've tried today on my hair again 10/69 alumina and it looks much better but my base is quite warm. My question is 10/69 bring some warmth to her base? I'll use low lights 6-1 for roots as well as h/lights. I'm sorry for lengthy post