Gantt class color
.ggroupblack,
.gtaskblue,
.gtaskred,
.gtaskgreen,
.gtaskyellow,
.gtaskpurple,
.gtaskpink {
height: 13px;
filter: alpha(opacity=90);
opacity: 0.9;
margin-top: 1px;
}
/* Task bars - ggroupblack is set as the default class on the task if it is undefined */
.ggroupblack {
height: 7px;
background: #000000;
margin-top: 2px;
}