Hi,

I am using Google Charts DataTable Roles 
https://developers.google.com/chart/interactive/docs/rolesexperimental 
feature to draw intervals and annotations in graphs as specified in the 
above link.

But I want to explicitly specify color of the interval. For example, in the 
below charts the color of the interval is blue:-

[image: Google Charts Interval DataTable role]

How can I change the color of the intervals to say yellow? I have observed 
that by default, it takes the color of the curve, for example, the color of 
the line is blue and hence the color of the interval is blue.

I tried the following approach but failed:-

addColumn({type:'number', role:'interval', color: 'yellow'});

Any help would be very appreciated.

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