Stylesheets are still broken on OSX

Attached screenshot is from the Stylesheet demo from Qt 4.8.3 (binary downloaded) running on Mountain lion, but stylesheets have had problems since at least 4.7 on Snow Leopard.

1) Radio buttons and check boxes cannot be styled.
2) Spinbox buttons cannot be styled.
3) Combo button menu upper and lower borders cannot be styled.

Of these (3) is the worst as it cannot be worked around without creating an entirely new custom view with custom paint events (look closely at the top ant bottom of the menu).

It's something to do with non-editable combos. If you set the combobox as editable, apply the stylesheet, and then set it as non editable again, the styling works better. No joke (see the screen shot from the demo with the 'name' combobox menu open.

The other screen shot is from a commercial application that use Qt CSS to style it's menus.