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The bars are in the right position, but they are all the same black color. SVG has a way to change the color of the bars.
In SVG, a rect shape is colored with the fill attribute. It supports hex codes, color names, and rgb values, as well as more complex options like gradients and transparency. Add an attr() method to set the fill of all the bars to the color navy.
The bars should all have a fill color of navy.