The red appears too dark, but so did Iron Man's red in the original promo picture way back when, and that turned out fine, so I'll reserve judgement on that.
The earpieces are okay. I would have preferred more traditional, but whatever.
The real thing to write home about is that this actually looks like the Flash. There are little details I would change, but to be honest, at this point I don't even care. He's not wearing a hoody, he's not wearing goggles, and so far he doesn't appear to be armour plated. He looks like the Flash, which is more than I ever owuld have guessed, given the gutter-trash I've been trained to expect.
I'm excited to see if the rest of the series follows though on this solid start.