Black hair (level 4) using wella Kp 4/0 to cover greys and has blonde (level 8/9) highlights. Greys are mostly around her face. Problem is I want to lighten the money pieces around her face more than the rest. But those pieces never get as light as the rest of her due to the permanent color. What if use something lighter to cover her greys? Like a light brown to darken her greys without lightening her black hair so when it come time to bleach it will we easier to achieve the desired lift?