A few more tips:
Nice and Easy with "Color Blend" covers gray perfectly and doesn't leave you with the shoe polish (one tone) look because it leaves some lighter , medium, and darker areas.
Any of the dyes will ruin your bathroom ( or kitchen) walls, carpet, etc. if it gets splashed.
I use my laundry sink in the basement to be safe, put up a mirror and everything.
Lastly, DON"T WASH YOUR HAIR for at least 2 days before coloring, color "takes" better on hair with some natural oil in it.
Good luck, you should do fine if you follow the directions.