ruby.monkey
Veteran
If my camera gets noticed it's always been because it's old-fashioned, not because it's chrome-plated. The black ones get just as much (or as little) attention - and all of it has been friendly curiosity.

It's your body language that gives you away the most, not the camera or lens. Work on that and you will become invisible.
As to the lens, I would never sell my DR, but for the street a better option is the Elmar M v2 - which you can also find in black. It is a stunning little lens,it does not flare and has a much faster focus throw.
Here's a sample:
20143932 by mfogiel, on Flickr
Nobody cares what color your lens is. Only camera nerds notice these things, normal people won't see a difference between your stealth ninja leica with electrical tape over the logo and some Kodak easyshare a dude bought on clearance at pamida.
My experience is that chrome anything gets more attention than black. However more and more folks dont seem to tolerate cameras pointed at them.