How to change dependency lines(relation) color

[Mastan]

Greetings,

I want to change default color of relations. 

[Yana]

Hello Mastan,

You could take a look at the GanttView Styles topic in our documentation which explains in details how to customize the look and feel of different RadGanttView elements.

Specifically for relations, you will need to create a Style that targets RelationContainer class, base it on RelationContainerStyle and set only the needed color, for example:

<Style TargetType="telerik:RelationContainer" BasedOn="{StaticResource RelationContainerStyle}">
    <Setter Property="Foreground" Value="Red" />
</Style>

I hope this will be helpful.

Regards,
Yana
Telerik by Progress