How do I Dye/Color my hair extensions?

First, I want to say I've searched the forums for this question and I couldn't find anything. I really need help! :)

I have some hair extensions I need to color! Since transitioning, my hair has went from color #2 (brown) to 1b (very dark brown).

I have some nice hair that I bought when my hair was lighter and I'd like to color it. I haven't done so yet.

How do I go about this? What product should I use? Which color dye should I use to have #2 go to #1b? I don't want it TOO dark or still too light.

Help me please! :)
Thank you.

-Shani

I just wanted to recommend that you use a demi-permanent to blend your extensions to your real hair without the damage of a permanent color. Since you are trying to go a little darker this will work for you. Over time it fades because it is a deposit only, but by the time it does you will be ready to color it again anyways. You should be able to get a demi-permanent from Sally's. I always get Wella Color Gem I think is what it's called. All you need is that and the activator lotion and you will be well on your way to being perfectly blended :) Good luck!