static SimpleAttributeSet style_background(Color c) {
  ret style_background(new SimpleAttributeSet, c);
}

static SimpleAttributeSet style_background(SimpleAttributeSet a, Color c) {
  StyleConstants.setBackground(a, c);
  ret a;
}

static SimpleAttributeSet style_background(Color c, SimpleAttributeSet a) {
  ret style_background(a, c);
}