How can I change panel font color to white and change background on Ubuntu 12.10 (unity)?

Question

Hy guys. I've been looking for this on 12.10 version, but I just found for 11.10 tutorials.

I use radiance theme, and used Ubuntu-tweak to make the panel less opacity, but the font is black and now its kind weird.

I would like to put this font white and change de background too. I downloaded a image and I dont know what I have to do.

Edit:

Theres is how my panel is now:

http://img838.imageshack.us/img838/3042/capturadetelade20130213.png

Thanx guys!