Certain aspects of the Gantt can be customized. For example you can use your own template and display the desired task information in a way different than it is shown by default (see the Task Template
demo). You can also style different elements with CSS, for instance you can color the rows in the timeline table differently then they are colored by our the Kendo UI themes. For other non-css-related customizations we suggest checking out the Gantt's API, an example of such is adding a custom button
in the Gantt's toolbar.
Achieving heavier modifications that completely change the feel of the widget might require source code modifications.