The color of the extruded cylinder shapes in the below image should be bright like the colors in the Contents pane, but as you can see, they are dark and muddy. They are like this from any angle and I've tried using extruded 2D and 3D symbols and both have the same result. There are no attribute driven variations, like transparency. One thing I have noticed is that when I use a 3D symbol and don't extrude it, the top plane is bright, but the sides are dark. But that's not the case here - in the image the sides and top are both the same color. Any thoughts?