There are many people with some form of color blindness. The current monochromatic (single hue) option in the SvgGraph makes it difficult to distinguish different items in a dataset. An option should be added to allow to switch to polychromatic so that each adjacent item in the graph contrasts against one another. Polychromatic is the default when you graph items from the latest data page, and I think there should at least be the option to do this in the SvgGraph widget.