Unifying Graph Line Colors Across Several Widgets For The Same Device

Would it be possible to have a feature that allows for easy designation of the color used for the graph line that corresponds to each device?  Currently it seems that the same devices will be assigned different colors between the dashboard widgets and this can be confusing to the end user.  I understand this would also pose its own challenges if several data points were being tracked for the same device.  In this instance would it be possible to allow secondary and tertiary colors to assign to the device?