Hey Phil,
a quick story about our local KB and color. He was building his car for the first year and all he could talk about is solid Red. Solid Red. Solid Red. It went to the painter, ready for Red. When the body showed up back at his house all painted nicely, it had Jaguar Blue with White stripes on it.~!@#$%^&*()_+| ... It seems that he changed his mind at the very last minute. For two years after that, all he could talk about is wishing he had painted it solid red. If you love black, go with black. One thing is for sure, whatever you pick, you'll be stuck with it,... and its not so fun to have to change it later if you decide that you made a mistake.
For some, the hardest part about building a replica Cobra is deciding on the color - and it can drive you nuts. Like you said, you might change your mind in the next hour.
Question:
what was your VERY FIRST vision of the color Cobra you wanted when you ordered your car? Maybe that's the color... Good Luck.