D'aww.
I'm a natural brown. This time I hit it with some Garnier flat black, washed, and then used some Rockabilly Blue (Tish and Snooky's) after. Get's it real-real-dark blue. Looks cool in the sun. Wax washes right out in hot water. I used to be way more hard core like 10 years ago. Elmer's glue and egg whites can keep your hair up for a whole week.
If you're looking for a good red - def go with Professional Clariol Blazin' Intense Red or Red Hot. I would do a base color of red or red-violet first. Don't go yellow or orange or you're gonna end up looking like your moms had an affair with Ronald McDonald. Yukyuk.