I like the darker shades of grey/charcoal like Ford's 'Mineral Grey' and 'Dark Shadow Grey'.
It can be glossy and shiny and full of depth and dark and sinister simultaneously and neutrally without being loud and gaudy. Especially with simple machined finished wheels, dark tint, and a fresh wax and water beads and a 35mm camera.
Deep metallic blues are pretty sexy too, esp on square edgy angular styled cars.
But silver is kinda meh yeah. It's never caught my eye in either a good or bad way, and is kinda a "I don't know what color car I want" color.