Issues regarding Colors, Font Names

I'll keep it to the point.

1. While posting a thread, making a reply to a post i.e. writing anywhere..., the text color used is black while the background is gray. One has to concentrate hard enough to write anything.

Keep the text color white or something that isn't hard to understand while writing , if you can.  
 
2. Also I tried to change the font of the text in my signature. Only a few were working, Arial, Courier-New and Sans-serif to be specific. Rest were all displaying the same font even when changed.

ADD : Can you add a Grammar Nazi award too. Being one myself, I'd love to see it around. 

Thanks
D3VIL