Page Options – Color Theme (changes the section groups color & links) and Right Side Column
Customize Design – Fonts only
Top Navigation Content – will only put content between the logo and secondary navigation - it will not go any taller then the main navigation height.
Secondary Navigation – is up in the top of site below the Top Navigation
Main Navigation – can only change the link color
Main Header – No options
Footer Content – Content is left align will extent almost the way to the right with about 1/2 in from right (not spaced the same as left padding). To make this look nice the footer elements need to not be in the "all on 1 line" layout
Footer Navigation – Below Powered By in "all on 1 line" footer layout or above Powered By in "2 lines or 3 lines" footer layout
Footer – can change layout of elements; all on 1 line, 2 lines or 3 lines