I had no idea what you were talking about until I remembered that infrared is just a Radio wave and therefore everything is an antenna. Antennas that are good

I had no idea what you were talking about until I remembered that infrared is just a Radio wave and therefore everything is an antenna. Antennas that are good at transmit at X frequency tend to also be good at receiving X frequency necessarily. And different 'colors' are nothing more than different antenna resonance points.