Well, the red light was actually BOTH. In the shooting, a LOT of "Party Red" gel and "Bastard Amber" gel was used in the scene, and later was further red enhanced by Mark Lewis in editing, and this does cause a color change in the transporter elements, creating a very saturated gold-orange look. Klingon transporters WOULD usually be silent as a matter of tactics; you don't want your enemy aware of you beaming-in until it's too late, but the sound is Ralph Miller's department, so I guess he did things differently. YOU'RE WELCOME!!!