I spoke to a friend today, who spent Aud $200 on colouring and getting her hair cut.. By the end of it all, she wasn't satisfied with her final look! Well colouring your hair blonde to brunette is a big risk, no doubt. But, $200? and still not satisfied? Something must've went wrong in the process... Not living up to the client's expectations? Not clearly understanding the client's needs? Either way.. there must be some miscommunication in between.
In my opinion, noone knows it better than you yourself, Noone understands your desired look better than you do... What else is there to stop you? ;)