I'll be storing everything in little boxes inside my freezer. They will get no light even when I open my freezer.
I'm only using brown bottles for my working bottle. Long-term stash gets clear because I can see at a glance how it's aging over the years. But if I feel it's necessary I can wrap in foil as you said.
And if you have some left, we could make foil hats. Just kidding. Not sure why that reminded me of Weird Al and his Foil song.