My Roots are so Golden

I really messed my hair up now!! I spent all this time bleaching it back to blonde it and it was pretty but not what I really wanted. My roots came in and I knew there's no way to bleach my hair again and to try and match my roots to my blonde hair cause it kinda looked like dark golden blonde mixed with light blonde. I decided it's better to just go back to brown for a year and grow all my breakage out. I used a semi medium warm brown from Sally's and it turned my roots very gold almost orange looking and the rest is very dull and still kinda blonde looking. It's very damaged and I just want it back to my natural color so I can grow this mess out. My brothers wedding is next month and I want it back to a normal color. Any suggestions on what I should do?? I know I can use a violet base for the gold but the rest of my hair is soooo dull looking I'm afraid it will turn gray!! I'm looking for a light/medium brown. And it has to be a semi cause my hair is pretty damaged right now. Sorry this was sooo long.If you'd like a pic of my hair I can take one. Thanks so much!!!