How to make my hair darker? best answer get 10 points?

My hair is naturally medium brown .. Brassy and he shoots Kinda orangesh a reddish brown, and I do not like it. I usually natural instincts hair color to make them darker and remove the appearance copper. Tomarow I have a job interview and I want to be beautiful, but Unfortunetly I do not have time to go buy hair color and me dyed hair. what homemade recipes that I can use to make my hair darker for tomarow? Are emotional, have you tried? im sure there is information online, but im running out of time with work to do, so any help would be greatly appreciated! best answer gets 10 points!

IVE herd u iff ur hair soaked in coffee for 15 min. Every day it gets darker? I do not know if this really helps!? but I tryed! = D