By subtly standing out I meant looking unique minus dressing in anything that would be considered extreme. All three pairs of those shoes look like a good investment since they'll probably go with anything - each of them for different occasions of course. The pants: absolutely to going out to somewhere more casual, especially a rock show or concert I think.
I love metallic silver, too, and it seems as if it was easier to find, particularly on graphic shirts, in stores these past two years. Hopefully that continues! That skirt does look a bit uncomfortable now that you mention it so I don't think I'd want to wear it despite its color and material, either. I'd wear the dress but only if I was invited to something labeled semi-formal, otherwise it would probably be either too fancy or too casual.