On my late wife's 86 dodge diplomat, I had some fun.

Painted it Mary Kay pink and purple. Contrasting colors on bolt heads, valve covers, even painted the belts.

She would drag race the local cops: her diplomat was an old cop car.

She said, the look on their face when she would pop the hood after a race... Priceless.

She never lost a race. She said the D.A.R.E. car (a mustang) wasn't SHIP.

I had her running a Quatrojet dualjet. (Two barrel bolt-on replacement for a quadrojet. Only made for two years.)

I had a Carter quad on the shelf, all dialed in. Told her that if she ever lost a run, i'd swap the carbs and she would rematch.

Never needed it.

Anyway, have fun. Primary colors contrast best.