>Really, its rather obvious that light, and other EM radiation, at energy
>levels too low to at least maintain orbit would fall in, so, the event
>horizon is actually relative to the observers particular visible
>spectrum.
Light follow geodesics in space-time that have no relation to its energy/
frequency/whatever. The circular light orbit around a black hole is the
same regardless of what kind of light it orbiting.
Inside the "light orbit" orbiting around the hole makes you fall in
*faster*. This is one of the peculiar aspects of near-hole space.