Style.css problem

[Captured Magic]

Is there a way you can determine which part in the style code you are working on?  I have changed colors and in a few places that I have dark purple you cannot see the text due to me inadvertently changing the color for that text to purple also.  How do I figure out where that section of the script is that needs the change?  Is there somewhere on the internet that tells me the codes that you use for each section ie, h1, h2, table??  I hope this makes sense, I'm learning but I'm killing myself trying!  Thanks for the help!

Jeanne

[Tranz]

Using firefox: web developer toolbar and colorzilla extensions

[Sami]

web developer extension (for firefiox):
http://forum.coppermine-gallery.net/index.php?topic=31423.msg145984#msg145984

Web Accessibility Toolbar (for IE):
http://forum.coppermine-gallery.net/index.php?topic=31423.msg145985#msg145985