I heavily foiled a client today with about 6 inches of outgrowth. she wanted pearl highlights, I used Pravana bleach with 30 volume in front and on top of head and 40 volume in back, I also used the Matrix blonde ulimate 8 in my formula.She processed for 35 minutes after i was done foiling her. I was able to get her to a level 9-10(very pale yellow). When I removed her foils and begin rising all her highlights turned VERY gold! What happened? I am so perplexed by this..Any and all help and advice would be appreciated! Thank You my Family!