my style of clothes didnt really change that much when i went sly, though like everyone else I did start wearing dark colours more, I've always liked black, but it certainly shows up the dome so much better than the lighter colours, which make you look 'washed out'. I love wearing black shirt, trousers and leather jacket, or a casual 'sports' jacket when I go out. Also like wearing dark reds, clarets etc.
I do sometimes wear kahki colours, and 'combat trousers' etc, though I wore these a lot before i shaved my head as well, so no real style-change there.
I think the sly look goes equally well with jeans and polo shirts as with suits or smart-casual stuff. The shiny dome really sets clothes off, and as was said earlier, it really is a fashion accessory in its own right. I love wearing black and having a shiny head, because it makes you stand out in a crowd: something I would have hated before I went sly. It has given me extra confidence being sly, because, as someone else commented earlier, you get looked at, and it boosts your ego and confidence. Thus, I try to dress neater and take more care of my appearence, especially when going out, because more people seem to notice me.
When wearing the sly look, you HAVE to take care of your appearence, because you are representing SLY to the world.