Dark headliners are rare because they make cars feel smaller inside and gloomier. The main thing I'm not sure of is the pairing of metallic trim with the brick, but a very interesting look otherwise that I think I'd opt for.
I'm a fan of charcoal metallic/red in cars like the Honda S2000 and BMW 3-Series. But since red would probably be a bit much in a vehicle of this size and type, the brick would do.