How do i edit text color in drop down menu

[joesdomain]

When you click on a forum. I see thread. Theres a Title/Thread starter header. Right above theres
Forum Tools Administrative Search Forum Inline Mod

Now when I click on either drop down menu, the text is black and id like to change font color to white. Which file do I edit?

Here's my link: http://www.monctononline.ca/forums/forumdisplay.php?27-Computers-and-cellphones

Also, theres the blue bar or header that contains the Forum tools etc. Id also like to change that color to red.Which file do I edit for that?

Thanks

Joe