Change combobox background color in AS3

I needed to change the background color of the text region of a flash combobox – using AS3 at runtime.

Styles for some reason were not working.  The solution was to directly address the textfield property and change its background color.  Here’s an example:

cbo.textField.textField.background = true;
cbo.textField.textField.backgroundColor = 0xDEDE29;