When I use an inferior I expect it to dress as I instruct. My normal uniform for a sub slave is white socks and a collar. I found this look suits an inferior very well.
The male will be stripped the moment it enters my flat. This is so it can be inspected. I found leaving socks on it makes a sub feel more exposed; kind of dressed but not covered up.
Although the colour of socks is not all important I do prefer plain white or black. Though I have used fags in colourful football socks and other designs before. Inferiors who cannot commit to spending a few £s on white socks do not impress me much.
The collar is of course a universal sign of ownership, whether on an animal or a human. I have a black leather one with metal rings attached.
That is my standard uniform for a sub.