I would probably use black gelcoat on those black trailing edges...

I tape a piece of polyethylene plastic or a hotel room key card to one side of the board. I then clamp a straightedge (piece of aluminum, wood, stiff cardboard, hotel key card, etc.) to support the plastic. I then mix up epoxy or gelcoat and wet the exposed fibers in the chip really well. Then comes a mixture of milled glass fibers (or carbon) and epoxy or gelcoat and fill the chip being careful to avoid air bubbles (helps to apply a vacuum to your mixing pot to pop all the air bubbles first if you have the technology). Let it mound up slightly. Let it cure. Sand the one side, tidy up the other - done.