I finally solved the big mistery of material definition and made that fridge a non-reflective thing!
These will replace original files (if you don't want to replace them, change the name of my files, or put them in a different folder). If you have any recolours of the original Holy Simoly fridge, they'll still be reflective. If you want them to be not shiny, you have to make new recolours using my files.
I made two versions - for base game and freetime.
( Links! )