Is it possible to change the background and font color to something else?

I was wishing for a way to tone down that white background and change font color too.
Maybe have a way to change color of keywords, commands, comments.
I have not had much success trying to do this. Am I missing something?
The colors in the editor.(That's why I posted it in here.) I have seen the settings for colors, but they dont appear to cover the background and such.
I went back again and looked and although it is not obvious, I found out that the changes I was making were not taking effect until I closed the dialog completely.
Many thanks to you guys! (I use WinXp btw.)