Hi, Maybe i should know this allready after 3 years of beekeeping but i don't

After my last extraction this season i let the bees rob all the honey left in the supers
and i took them dry from the field to store them to the next season.

I noticed that wax moth atracted to dark combs and i didn't see
this nasty butterfly on white-yellow combs at all.

1. Does it allways like this and wax moth never live and eat in white-yellowte combs?

2. What Wax moth interest in dark combs (pollen, propolis,,,,) ?

3. How much time should i leave the combs in -5 celcius degrees freezer
so the wax moth eggs will be dead?

Thanks alot.