Powder Drop Thread

is there any way to center the words in the table without centering the actual table?

Not unless you center cell by cell.
Your best bet is to set the width option to 100% so it stretches and gives room.

They could install a centered contents class for you though.

css=myclass
Defines the aditional css class of the whole table. Possible values have to be defined in admincp.
The value is prepended by stg_table_ so the resulting css class with above example would be stg_table_myclass
The css code has to be added to "Additional CSS Definitions" of your style (AdminCP -> Styles & Templates -> Style Manager -> (Dropdown) Main CSS -> Additional CSS Definitions)

Try asking for it in the site suggestions since it might be useful to more than just yourself.