Heidi specified black and gold as her two colors, and I relayed that to the talented Jeff Wolf when I gave him the medium Icon Airmada helmet.
I don’t personally support the wearing of open-face helmets, so I don’t have any experience to draw from. Sorry!
In a nutshell, I suggest full face helmets because of this diagram. This illustrates the areas which take the impact in accidents.
That being said, I’m sure some folks out there have opinions for you!