Editing Message Background and Font?

[Stoneblind]

Andreas,

I am very satisfied with how my guestbook currently looks like, thanks to the use of some CSS a user posted here to change the background, but I would like to make some minor changes that I hope are possible with this service. I like how each message is inside its own "box" with black borders with the contents inside, however, I was wondering if the color of the inside of this "box" can be changed as well as the font color.

http://www.ultraguest.com/?id=1090464456

The color of the message box is white and the font seems to be a dark shade of teal; I was wondering if this is changable? If it requires CSS, if you could supply me with the necessary code, (I do not know CSS unfortunately) that would be great, but if not, when would these little things be able to be edited?

Thanks,
~S.B.