news feeds question

I am running the Nebula theme on the Imagineers chroncial http://www.theimagineershome.com/blog/ which has a black background. I would like to change the font color to white to make it stand out against the black background however when I do the text becomes invisiable aginst the white backgound of newsreader. Is there a plug in or a way of making the text appear black in a new reader while white in the blog.

Jeff