silvers look great with black... but if silver is too bright for you consider something more in the charcoal range. lots of car brands have very nice charcoals with varying amounts of metallics in them. look at some mid 2000s BMW charcoals or same era chevy on corvettes, a darker one is called galactic grey. another nice charcoal is fords charcoals of the mid 2000s you will see on F150 trucks. i painted my 72 firebird a 2009 BMW charcoal, looks great with black interior. i almost went with a newer kia called titanium silver that is more of a charcoal or dark silver.
https://www.optimaforums.com/attachm...ge-jpg.105345/
BMW sterling grey i used on the firebird.
https://i.pinimg.com/originals/60/e5...e0e8202730.jpg