Worst recommendation/advice: "High visibility (clothing, accessories, gear, trim, etc) will make you safe."
No clothing - or color - has such magical properties. Unless it's a full body air bag or something. But that would be sort of awkward on a bike.
Color can help (no guarantees tho) make you visible, but that is a far different animal than "safe."

Best recommendation/advice: Assume that idiot in the car doesn't see you.
Corollary: Ride like you are invisible.
Ride defensively and ride safely.