Click on 'Links' in the Registered User Menu on the left. Somewhere in there (I think it may be in the 'Parts Interchangeability List') there is some info on colours, which may give you a lead.
However, if I may make a suggestion, unless you are planning to repaint only a section or two, you might consider repainting all panels iridescent pearl white (like a real pearl). It's a special paint application, and a little more expensive. That's what the first owner of my bike did, and man, it's beautiful. You can see it on the first page of the 'Gallery' (Erskine Hewett), although it's much better in real life. You can see the air cooling outlets in the rear have been sprayed in smoky grey too.