Not a hairdressing professional, training to be a makeup artist-watched a vid on how to turn my gross bleached hair with 3 inches of my natural roots into a perfect balayage...lengths look fantastic, very ashy medium blonde as close as I could get to my natural colour-however I applied this same mix of wella koleston 7/1 and 20% vol developer to my roots also and I its turned them this horrible orange colour?! Tried toning with no luck what should I do? Can't afford salon prices. X ty in advance