What's the best, temporary red hair dye?

Tomorrow I'm going on a week long trip, and during the trip I wana try red, think mary-jane spiderman, and I want it for just a week in case I don't like it. which would be the best, most easy, store bought brand i could use?What's the best, temporary red hair dye?
If you're in the hair dye isle at the store I bought the temporary color in the shiny metalic little box. I bought the cherry red I think and it was fun and came out fine after a few days. It was really bright on my blond hair. You'll probably see them, sorry, I can't remember the brand. They had charactures on the box and other fun colors like a purple too.What's the best, temporary red hair dye?
http://haircolouring.com
Red Food Coloring
henna, its natural and temporary
def. paul mitchells semi permanent color 3R.

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