pc3门户用的是AdminLTE，所以相关的样式基本上都在/UI2/portal/pc3/AdminLTE/css
pc3可以设置不同的主题颜色，每个颜色都是不同的css，默认的主题颜色首页右上角显示项鼠标滑动样式如下：
/UI2/portal/pc3/AdminLTE/css/skins/_all-skins.min.css中

.skin-blue .main-header .navbar .nav>li>a:hover,.skin-blue .main-header .navbar .nav>li>a:active,.skin-blue .main-header .navbar .nav>li>a:focus,.skin-blue .main-header .navbar .nav .open>a,.skin-blue .main-header .navbar .nav .open>a:hover,.skin-blue .main-header .navbar .nav .open>a:focus,.skin-blue .main-header .navbar .nav>.active>a
	{
 	background: rgba(0, 0, 0, 0.1); 
	color: #f6f6f6
}
[/css]
可以自己修改样式

.skin-blue .main-header .navbar .nav>li>a:hover,.skin-blue .main-header .navbar .nav>li>a:active,.skin-blue .main-header .navbar .nav>li>a:focus,.skin-blue .main-header .navbar .nav .open>a,.skin-blue .main-header .navbar .nav .open>a:hover,.skin-blue .main-header .navbar .nav .open>a:focus,.skin-blue .main-header .navbar .nav>.active>a
	{
	background: red;
	color: #f6f6f6
}

pc3