score:2

Accepted answer

just add backgroundcolor to your dataset to change the color of all bars.

...
backgroundcolor: 'rgba(121, 121, 255, 0.2)',
...

if you pass it an array of colors, it will set the color bar by bar for the dataset

...
backgroundcolor: ['rgba(121, 121, 255, 0.2)', 'rgba(255, 121, 121, 0.2)',... ],
...

fiddle - http://jsfiddle.net/l9qsb3h4/ fiddle (bar by bar) - http://jsfiddle.net/0b98k2g8/


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