What shall I do about my bleached hair, its orange at the tips :(?

I was trying to do a ombre look but it turned out orange. Next week is prom and I need to sort it out quick and fast. I have very dark hair by the way as I'am asian. Shall I dye over the orange bits my natural colour? (suggestions on dye I should use if so) or use a blue toner to get rid of the orange. But what colour will it turn out if I use the blue toner? help please!