How to set the css class (or style) of certain table cells

I’ve got an asynchronous table (caf_h:dataAsyncTable) bound to a content provider (ListTableContentProvider) and its contents are defined inside standard columns (caf_h:columnStandard). How can I set the CSS class (or at least change the CSS style directly) of certain cells (single rows of columns) based on some content values?

Best regards,