Background-Color in TDBADVSPINEDIT

Hi,
i develop an App using VCL Styles.
Now i have the problem that different Edit-Components do not use the background color (including transparency) i choosed for the component.
I allready tried to turn off the Stylemanager for the Component-class. The effort was, that the background is drawn correct outside the "text-rectangle" :

Turning off theming for the control does not help..(  SetWindowTheme(DBAdvSpinEdit2.Handle, nil, nil);)

any ideas???

Thanks
Juergen

I found the solution here:

http://theroadtodelphi.wordpress.com/2012/02/06/changing-the-color-of-edit-controls-with-vcl-styles-enabled/

THANKS to RODRIGO!!!