I was tracking how to get a ComponentUI in to the setSelectedUI() method and
I found these two cases of updateStyle() where its argument is not passed to
the getContext() call:

SynthInternalFrameTitlePane.java:
    private void updateStyle(JComponent c) {
        SynthContext context = getContext(this, ENABLED);

SynthListUI.java:
    private void updateStyle(JComponent c) {
        SynthContext context = getContext(list, ENABLED);

In all other updateStyle() methods the argument is passed to the getContext() call.