CSS Color Display Error (Firefox)...

Okay, so I'm one of the developers for the build avarice project; and have kind of ran into a css rendering problem in firefox. The problem is the text in a welcome message is supposed to show up a bright white color (#ffffff). Which it does perfectly fine in I.E., but in Firefox it seem to come out a geryish color vs. white. I've gone over just about everything in the CSS file and nothing turns the font greyish - so I'm assuming this is a rendering error with firefox.

My hope is that someone has experienced this and know some kind of work around - as the website just won't look as nice if I can't convince it to render bright white.

Note: The website itself might be a bit complex to parse-over and tell me what's wrong, but if you want to give it a shoot it can be found here (Note: Give it some time to load!...): http://www.playavarice.com/SandBox/DevProject2/my_av.aspx - The part I'm talking about is the first Dialog box that read's 'Welcome to the Avarice: GE Sandbox System 2.0.2'. In Firefox you will notice the font color of the contents in the dialog box is not white; that is my problem. (How do I fix it.)

Thank you so much for any help.

Looking at it in both IE and FF, andf using the color picker in FF, you see the gradient. You see how in FF the words are near the bottom of it where it fades to the dark color? An din IE the first line is almost all in the lighter color. I think it's an optical illusion. The color code is #FFFFFF and it is white. It's the gradient behind it playing a joke on your eyes.