Not sure if this has been asked before, but can you have different skins made to switch between them?
If so is there a limited number you can have saved to you profile?
Looks like nobody answered, so I'll do the best I can:
You should be able to create multiple skins through
Site Skins by clicking the "- Create New Skin -" link under the "Create/Edit Skins" section.
You would freely be able to switch between them on that same
Site Skins page, manually, by clicking the one you want in the dropdown box labeled "My Skins" in the main "Change skin" section, and then clicking the "Use this Skin" button.
I don't know about the limits, though! I believe you are able to save a handful of custom skins if you need them.