At Home Hair Care bad color job opps

Well, I do color my own hair, but I really messed it up yesterday, basically I wanted to make my hair a solid dark brown, the ends were looking a little shabby and for some reason when I give myself a nice hair color job makes my hair look more alive afterward.

So I went to the drug store got some color, and did it. But I didn't do the roots enough, and for some reason the top of my head is a lighter brown and the lower part of my hair is a darker brown.

So I am clipping my hair up, sort of hiding it, and running to the store again to buy another box!