These are some basic bump map tests I constructed to test out my mosquito texture idea. They're a little dark admittedly and in some respects they may look more like stone than ceramic (the third one possibly more than the others) but the good news is the texture can be considered tileable, which will be useful when it comes to adding it to a more complex model. like the mosquito itself.
I might have to turn the tone up anyway as according to my research it's only really the SR-71 Blackbird which is near-pitch black. Other stealth jets are more a charcoal or grey colouration. That and my current concept sheets have it a light charcoal colour rather than near-black.