Most of the buttons in the UI have a dark background with light writing. The Ok/Cancel buttons when editing a configuration are standard issue HTML buttons.
rev537 - fixed 2 dozen or so various css issues with buttons, all buttons now either: 1) are controls of some paginated data set, nested inside of a rich:column tag, and have styleClass of "on-pager-button buttonsmall", or 2) are general button controls on the page, nested inside of an h:panelGrid with styleClass of "buttons-table" and columnClasses of "button-cell", and have themselves a styleClass of "buttonmed"; quick list of files affected: admin/plugin/plugin-list.xhtml content/createContentSource.xhtml definition/group/edit-general.xhtml definition/group/new.xhtml group/inventory/edit-connection.xhtml group/inventory/edit-general.xhtml group/operation/groupOperationScheduleDetails.xhtml group/operation/groupOperationScheduleNew.xhtml resource/content/deploy.xhtml resource/inventory/create-config-2.xhtml resource/inventory/edit-connection.xhtml resource/inventory/edit-general.xhtml resource/inventory/view.xhtml resource/operation/resourceOperationScheduleNew.xhtml
This bug was previously known as http://jira.rhq-project.org/browse/RHQ-218