The pot would need to get direct strong sun to really 'cook' and that much sun would be bad for the plant, so that situation wouldnt happen
I reckon either would be fine, althought white pots would look grubby quicker, so i'd go black (Y)
Remember to repot them to hydro when there in active growth, catts and relatives have weird cycles, only repot when the new growth is laying out new roots. same for oncs and dens too, den especially careful dependin on what type.
Tom499