By the way, wanted to add, ALWAYS, ALWAYS do a test before coloring your whole head. When I first used T&T, I colored a little patch of hair on the side of my head first (right in front of my ear), so I could determine how long to leave the color on. Depending on your hair's porosity, you may have to leave the color on more or less than recommended.
ALSO, your natural and relaxed hair will take different amounts of time to reach the same color, usually. I forgot about this when I did my last color (I'm transitioning), I should have left the color on my hair about 5 minutes longer than my "Normal" time since my roots are natural. It's a very slight difference in color, but I can see it when I inspect my hair. No one else can really tell. I'm gonna fix it in 2.5 months when I recolor my roots.