JButton okButton = new JButton(OK_BUTTON);
previewButton = new JButton(PREVIEW_BUTTON);
JButton cancelButton = new JButton(CANCEL_BUTTON);
browseButton = new JButton(BROWSE_BUTTON);
propsButton = new JButton(PROPERTIES_BUTTON);
colorButton = new ColorButton(new Color(255, 0, 255));
// Combine browse button and tile bitmap path text field
JPanel tilebmpPathPanel = new JPanel(new GridBagLayout());
GridBagConstraints c = new GridBagConstraints();