hard to color blonde

> i just recently colored hair for someone and have been> coloring it for a year now, but can't get the color> just right. she colors her hair blonde, but waits to> long between coloring which makes it difficult to get> the dark roots out. i have tryed to get it an even> color but still not to my liking she waits to long> between coloring and makes it even more difficult to> take.. this time her hair was almost there but the> roots are still not light enough. how long between> coloring should i wait and should i just color the> roots in about 2 weeks to prevent damage it looks ok> but not vantastic... i am a perfectionist and its not> really to her liking either so what should i do . we> have talked about coloring her hair a bit darker so we> can even out the color but she's not sure ... her hair> color is so difficult to work with please let me> know... confused patti> or hortipm@aol.com.I went to a Beauty College long enough to learn what I needed to learn. I decided that was not what I wanted to do. The question that you had on coloring your friends' hair. Did you know that when you color dark hair that you can only lighten 5 shades? You might want to try the same product that she has used in the past. Be careful not to give her gold bands!