[Graphics] Default axes color

[John W. Eaton]

On  4-Feb-2008, Michael Goffioul wrote:

| Michael.
| 
| src/ChangeLog
| 
| 2008-02-04  Michael Goffioul <michael.goffioul at gmail.com>
| 
|     * graphics.cc (axes::properties::set_defaults): Set default axes
|     color to white.

I applied this patch.

Thanks,

jwe