Yeah, I also think it's the size that matters. A bigger passive component, unconnected, in a desk drawer definitely generates more noise, especially the black ones (they absorb more quantum energy and that energy has to go somewhere ... so it's being radiated into the room and therefore raises the noise floor ... Q.E.D.)!
My floor is made entirely of magic pebbles. Somehow the product doesn't work as advertised though because each step makes a helluva lot of noise!
Edited by xnor - 11/21/13 at 7:24pm