I clean a lot of sinks (I'm a housecleaner).
You might be bummed to hear this, but, plain ol' white enamel is the best way to go. It really shows far less grime than anything else. It's durable and quiet when the water hits it.
Black shows everything, as does stainless steel (plus, stainless tends to be very loud when the water is running, and contrary to its name, it does stain, plus, if you have real or plated silver anything, and it gets washed with a product containing bleach in your stainless sink, your silver will get black and ruined).
If I could design kitchen appliances, they would all be the color and texture of dried spaghetti sauce.