Force black text in TitlePanel in installer

Fixes isue 4218

Change-Id: I0091b6d94a1d3d8e70eab79441199a9a62776d83
Reviewed-on: http://gerrit.dmdirc.com/1377
Automatic-Compile: DMDirc Local Commits <dmdirc@googlemail.com>
Reviewed-by: Chris Smith <chris@dmdirc.com>

src/com/dmdirc/installer/ui/TitlePanel.java

 
         title.setFont(title.getFont().deriveFont((float) (title.getFont().
                 getSize() * 1.5)));
+        title.setForeground(Color.BLACK);
         add(title, BorderLayout.CENTER);
         add(image, BorderLayout.EAST);
         setBackground(Color.WHITE);