primer my car what color?

You should prime the car the same color if your using metallic, candy or translucent paint, because the base coat/ primer shows through those kinds of paint, it doesnt matter with other kinds of paint if the primer is the same or not.

If the proper amount of paint is applied the color will be correct...however, you may consider black primer that will not be noticeable should you you get a rock chip.

On a side note, primer gray cars look AWFUL.

not really

I had black bumpers on my civic and when I painted the car silver everything matched

The car was red to begin with

Just primer the car black, it'll eliminate all worries