It was bothering me too, but I found that you can change the default font setttings (at least in firefox anyways). The crappy thing is that you have to change it back to see any webpage's normal font output.
In firefox, go to Tools --> Options
Then go to the Content Tab. Halfway down you'll see "fonts and colors", and you can change your font size if you want.
Go to Colors..
Choose the color combos you want, and then uncheck "Allow pages to use their own colors.."
There probably is a way to do it in other browsers (ie, safari, ect.), and there might be an easier way for firefox, but at least this worked for me.