As someone said "there's no bad colour for the DS4" and I guess there's no best colour either. The car looks good in all of them, each one highlights a different feature of it. To me dark onesshow off its front - hide the big muzzle, lighter colours set off the back.
Imyself faced a dilemma which colour to choose: black, brown or grey, grey shark won. Sometimes I wish I had gone for the Babylon.
BTW so many newbies recently, looks like DS4s are mushrooming