Race doesn't matter in this thing.  Intellect, moral strength, and true virtue do.  

Right is right, as in correct is correct.  Racism is wrong.  Trump is a racist, and supporting Trump, regadless  of the sophist "for" arguments, is wrong because of that.  There is no middle ground.  

There are any number of non-whites who've chosen to be Trump supporters.  The speak as talking heads on the news.  They post here (see above).  

But, their color doesn't make Trump "right".  Nothing can do that.  

How or why can or does a person of color support Trump?  People followed Hitler and got caught up in his movement.  Nationals (Nazi sympathizers) of various countries became turncoats on their own people - with whom they were ethnically homogenous.

If nothing else, the color of a non-white Trump supporter makes clear that the evils, iignorance, and infectiousness of racism is not a color thing.  It's a disease that can infect anyone.  An evil, an aberration that exists and infects.