If you have wine in a fridge it's usually only for a few days to months, so you're not talking about a wine ageing and being affected by light. If you really are using this for a wine that is going to age for 5-10 years it's probably in a basement anyway where it's dark
Also my wine fridge that I keep upstairs has tinted glass.
Definitely you don't want it to be sitting in the sunlight in any case
The glass doors are great because you can glance in and see if you want to get a bottle from it without opening it up and changing the inside temperature without needing to.