I have a question about hair dye?

i wanted to dye my hair 'deep burgundy' one the top and underneath 'pink fetish' but im not sure which to dye first top or bottom cause i don't want to get burgundy on the pink or pink on the burgundy. but fir the pink i have bleach my hair..... please help thank you!!! by the way: the 'deep burgundy' is by "revlon colorsilk' and the 'pink fetish' is my 'splat' thanks again!