Any help appreciated. I had a client natural hair level 7 with some old highlights thru the ends. She chose to go for 9/1 wella so I decided to put 10/1 with 30 vol to lift the natural hair and 9/1 with 20 vol for her ends. This is how it came out. The ends looking good but on natural she's like 8/3 the now don't know what I did wrong. She's coming back tomorrow. Used Olaplex - could that affect the colour?? And how to fix it????