Tomp,
I have the same situation- a black C14.
I've been of the same mindset lately, and decided to increase my visibility.
Last month, I bought a new Scorpion EXO1100 Jag helmet, combines hi-viz yellow and black graphics, good looking helmet, full featured FF, looks good. I also bought a new First Gear all-textile waterproof jacket in hi-viz yellow. I then bought some thin 1/8th inch wide hi-viz yellow pin stripe tape, and added some highlights to the bike along the fins on the bags and fairing.
I've noticed getting more attention from drivers.
Even if it doesn't look as good as other colors, it does work.
I say, anything that gets you noticed, is a good thing and worth it.
Personally, I think black and yellow look good together.