You will....get chips, they are unavoidable, a light white/gray
primer will stand out like a sore thumb.
Typically a light color primer will work better under a light
color and vise versa for the dark. The less contrast between
the two the less you will notice it.
Also in some cases your choice of the primer base can lighten or
darken your top coat unless you are laying down multiple heavy
coats of finish.
Here's an example of the prep for a Mariner Blue paint finish.
Grills get a lot of chips if the vehicle is driven: Grill-bars-in-prime
On the hood and fenders I made the mistake of using
DP50 light gray and I'm paying the price.
When I was involved with aerobatics, it was just good common
practice to paint your fuselage a light color such as light
gray. The contrast of a dark crack on the light background
showed up where it would go undetected with a dark background.
Thought you we're all finished with your Art Daco Dave?