Interestingly, I remembered a softshell I bought for hiking. It was a bit big for that purpose - but I loaded up my puffy (FL Uncompaghre) and 2 baselayers - fits perfectly. I don't know how well it breathes but it does shed wind and light rain.

https://www.freecountry.com/products/mens-cross-trail-softshell-jacket

My is perfect deer color (tan) which is a drawback to me - I don't want shot. Maybe a little dye job will work......

Adversity doesn't build character, it reveals it.