Widget components and widgets in screen space are not the same color

Widget components appear to be affected by lighting. This causes differences in color between widget components and widgets that have been added to the viewport.

1. Open the attached project
2. Play in editor
3. Walk up to the 3D widget (red square in the level)
4. Compare the 2D and 3D Widgets
5. Notice that are not the same
6. Press F2
7. Notice they are now the same (after lighting has been removed)

Expected: The widgets would be the same color when lighting is applied because they are not supposed to be affected by lighting
Result: The widget component appears to be affected by lighting