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There are classes that every theme I have seen use like odd, even, etc.
I think a lot of modules take advantage of these and the look is maintained across themes pretty well. It is a lot better than requiring manual adjustment of the css to work with your theme, or worse hard coding the look.
I am not aware of a list of standard classes, though that would be most useful.
But any way you go... GO SMARTY! Too many advantages to list!
JMass