where are color stored?

[baseball]

so , if for example i change .navbar in the gui to a differnet font color where is that information stored (css) or (xml) I notice there was a controlpanel.css but i didn't see color information saved to that file after i changed it in the gui admin. so i suspect the color info is saved to an xml file. i happen to call my template 'custom' so does this mean that there is a custom.xml file or is everything stored in vbulletin-style.xml