[xwiki-users] Vertical Form layout

What is best practice on changing the style of a form while keeping the default colibri-style intact (for easy upgrading) http://platform.xwiki.org/xwiki/bin/view/DevGuide/VerticalForms In the Guide the labels, required, help, hint, Error are ALL positioned ON TOP of the input box, selector,... Label - required -> help hint error INPUT The request of our people is to have the vertical form layout slightly changed into a so called "two column" layout with use of Group(or Row) In the left column we would like: Label hint In the right column we would like the remaining - required -> help error Input Where the label is off course horizontal aligned with Input 1) Should we use a style sheet extension that is applied to all pages (or to pages with a object display and a inline form)? 2) Is this available as a snippet Gerritjan