Many people objected to the government allowing entry to so many economic refugees.

He banged his fist forensically on the top of a dinner-wagon.

That is, when a colored surface is illuminated by light, an event takes place on the surface, and that event is characterized by a certain SSR. Since SSRs are defined in terms of percentages of reflectancy, the property holds constant over variations in illumination, so long as there is enough light of the right sort to produce a light-emitting event.

Our family was in this latter, slackerish category.