Is there any way I can change the graphic so I can tall which parts I have built parts from? The light blue box with the thin lines is hard to spot.

1. Since the Components are dedicated to a layer (like "comp_+_top" or "comp_+_bottom"), you can change that layer color to something that stands out more (like"white").

2. You can also force the component layer to be drawn last (effectively drawing the components on top). Go to Layers Table (menu: Setup | Layers Table), check option "Draw Active Layer Layer", and then make the component layer you want to view active. You will also need to turn off "Translucent Viewing" if it is on, menu: View | Translucent (uncheck).