AFAIK, you can´t with the standard MessageBox, since it obeys the
preferences of the user for Windows colors (Control Panel, Screen item). So,
you have to use a custom form to show your messages.
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Carlos J. Quintero
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Have you try to inherit a new class from the MessageBox class ?
I never try it but the MessageBox ins't sealed, so it would be possible.
just have to override a few method or properties, i think