You can define the bar labelling and colour for activities and subprojects at your convenience.
In order to define the format, do as follows:
Activate the tab Format in the window Project properties.
You can use the area Bar labelling to define the bar labelling of activities and subprojects.
The Type column shows which object – an activity or a subproject - is labelled.
The Position column indicates the labelling position.
The Content column indicates the selected labelling.
Set the cursor on the area Bar labelling according to the required position in the corresponding row.
Then switch to area Fields and choose a variable that should be integrated into the labelling.
By double-clicking it will be copied in the field Bar labelling.
Finally, click on the button OK.