Customizing Dialog colors.

Customizing Dialog colors.

Hi guys,
I have two set of dialogs that I use in my application. One for
general feedback and another for errors. I would like to
differentiate between the two by having the red color dominating the
errors dialog.
I have seen, through the documention, the option dialogClass:
"alert". Now my naive reaction was to just use this to initialize my
error dialog which did not have the desired effect. Consequently, I
am wondering what I need to do to change the title bar and the main
area background colors.
FYI, I am fairly new to jQuery UI :).
TIA,
George
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