After getting caught out in the dark a few times with no light, I decided a taillight would be in order. Instead of the usual light mounted on the seatpost, I was hoping it would be possible to make a more "factory" looking setup. If it's possible, I'd like to mount an LED on the inside of the reflector holder. (picture attached) The issue is that the light has to shine through a reflector. I was wondering if this would work or not. I would've already ripped into it and tried it, but the bike is 40 years old, so spares aren't readily available, to say the least. If the light can properly shine through, would I use a white or red light? Thanks.