Why would you not want to make the bike more visible during the day by using red reflective material.
The same drivers that would not see you at night, also drive during the day.
I can't speak for others, but I can for myself
Because my bike is nice looking and I don't want tacky red stuff visible in the day
In the day, the bike already is pretty visible... night is always more of a challenge. Not sure a little passive red in the day would help much. But I enhanced visibility in both by adding an Admore light bar tail lamp on the rear and turned the front signals into running lights.
Everything is a trade-off.