[TIMOB-3409] BORDERSTYLE_ROUNDED causes TextField backgroundColor to be ignored

Running on iOS 4.3 Simulator, with Titanium Mobile 1.6.1.

The following code generates a small TextField with white text on black background. Uncomment the borderStyle property and the field becomes white.

noteField = Ti.UI.createTextField({
    left : 30, width : 50, top : 35, height : 30,
    color : '#FFF',
    backgroundColor : '#222',
    borderRadius : 10.0,
    paddingLeft : 5.0,
  //borderStyle : Ti.UI.INPUT_BORDERSTYLE_ROUNDED
});