http://66.195.17.52/~vobe/html/modules/newbb/
I found out, that this color must be definded in /theme/style.css (not in newbb/css), because using the default theme and changing values:
.head { background-color: #E2FFD3; padding: 3px;}
.foot { background-color: #E2FFD3; padding: 3px;}
.blockTitle {background-color: #E2FFD3; color: #666600; padding: 2px; font-weight: bold}
result of changing values in default style.css
http://66.195.17.52/~arm/html/modules/newbb/
Remaining problem: I cant find the corresponding values in the E7 style.css (Copyright © 2004 by eirenicon l.l.c. | Site style derived from the original design by 7dana.com).
http://66.195.17.52/~arm/html\themes\e7\style-org.css
Does somebody know how I can define a lighter color for the "category bar" in newbb?