Yes, flat black is a good option.
The flat colors help hide imperfections in the body. I have done some looking into flat blue.
Flat colors can be tricky and some have obvious tiger stripes.
But then again, it's all in personal preference.
Spending time in these forums, I've grown to appreciate all the varieties we have of our trucks.
Here is an option if you don't want to have to do any body work.

It was a rusty color red, but of course, I had to make it blue.