My 280zxt block is headed to the machine shop next week. I thought about painting it blue, close to the Datsun color or a GM Mopar blue; something close. I have a silver car and plan on reshooting the engine bay while my motor is out. I got to thinking a dark metallic gunmetal grey might look good against my light silver engine bay? Any negatives to using metallics on a block? Oldsmobile had a bad arse bronze metallic they used on blocks in the mid 60's that might look cool too. Thoughts?

That combo would be attractive but perhaps a bit dark. A Datsun blue tempered with a bit of bay color would also look good.

Go for pink Ben.