Hi I have a client who has a short textured hair cut with a tinted level 5. This time she wants to keep the base colour the same but with purples slices throughout the top. She has about 40% grey so I use 5/0 with 5/77 for the base. So I was thinking of slices with bleach to prelighten to maybe orange and then using 0/66 over the top for the purple. Do you think this will be ok and how would you go about it. I usually put the foils in 1st and then apply base colour in between. She will have a good inch regrowth. Would I need to rinse, dry the hair and apply the 0/66 on the prelightened hair. Any advance would be great