Is L'Or�al Casting Cr�me Gloss plum the best semi permanent purple hair color (colour!?) for dark hair?

BUY SOME MANIC PANIC HAIR DYE. IR'S SEMI-PERMANENT BUT IT WORKS GREAT. MY HAIR IS ALMOST JET BLACK AND ONCE I DYED IT BLUE. THE BLUE STAYED IN MY HAIR FOR ALMOST A YEAR!!! BUT IF YOU BLEACH IT THE COLOR WILL POP EVEN MORE.