as a plugin developer I would like to use some of the fancy css styles that are already in use in administration screens like the widget panel.
Is it safe/advisable to use classes like .widget-top, .widget, etc.? Or may I define my own styles and make use of image data like images/gray-grad.png or images/menu-bits.gif?
What would be the preferred approach? Is there any documentation about these topics? I can't find any.
Thanks in advance for your kind help,