In real life, we'll never see a black woman, especially an African one with blue eyes and pure white hair. It wouldn't even look right and look very freakish.
When they added the greyish streaks in X3, it made Storm/Halle look much more natural.
The short cut works for DOFP. And, blacks not familiar with X-Men would HOWL as to "why does the black woman have to try to be white and wear blue contacts?" I got that very same reaction from my mom when I told her about Storm in 2000.
Signed, a concerned black American.