Style messages (status, warning, error, help)

Background colors:

• Consider changing the red color values to match the page furniture's red "X"
• What green should be used for the "status" message backgrounds?
• What colors should be used for "help" and "warning"? Usually these are blue and yellow/orange, respectively.

Need a way to distinguish message boxes from other boxes on the site:

• One idea is a page curl effect