Task colors Celoxis allow you to pick different colors for tasks. This helps you to visually differentiate between different tasks in your plan. That color will replace the default blue we use for colors in Gantt.
You can pick from a set of predefined colors that are available on the right-click of a task on the Gantt. 
The task color will be shown in task reports and the Gantt. When you copy or move a task, the color is retained.