Fred Bloggs - 2005-05-09

I've had a hunt through the forum but can't find an example of how to do this although it comes up a lot.  I need to change the colours and fonts on a graph as follows.
The surround (defaults to grey) and the graph background should both be #F7F7F7
The font should be verdana
The 3 lines should be #1F1F8F, #1F8F1F, and #1F8F8F
I'd be incredibly greatful if someone could show me how to do this based on the tutorial example.  I understand I need to use the PostProcessor to do it but cant find an example to get me going.
Thanks so much