Hair color advice........?

My friend has natural black hair and wants to put streaks of color into it. We've done this with her before, so we know how.





We've used the colors: red, pink, and yellow(for half a second, but the nickname Bumble-Bee stuck for life)





Of course she only did one color at a time. This time however she would like to do two colors: purple and green.





Do you think her black base would look good with both purple and green streaks?





P.S.: Purple and Green are her fave colors.





Thanks.Hair color advice........?
neither!!!Hair color advice........?
Natural black is best.