Potential skin color does not worry me half as much as likely hair does. Frankly, I can't stand traditional and modern African hair styles and hair types as they fall within the super short and/or super curly ratio. (I also can't stand paisley as a pattern, pale yellow as a color, square geometric shapes. So what?)
Kid Flash would be major BS to me even if he was Northern European or Asian or Hispanic or Tellurian. Honestly, that was a crap hero name. Like Icicle Junior. Wally's original becoming-a-superhero story was better than that name. Jay's background story was better than that name that's how bad it is/was.