@ cres lmao at first i thought the same, then i remembered my wife had a mylar covered one.
I thought he might be growing in an igloo and needed to keep the heat in the grow
My mylar has hand prints and spray splatter all over it and it looks like hell and dont think it's reflecting as it did clean.
my shower stall is an off white fiberglass kinda thing and i didnt want to paint it, so i went with mylar. i wanted the crinkled mylar because it breaks up the light to reduce hot spots.
Fox farms was on my list of nutes to buy and so was General Hydro, so when i got to the store they had GH on sale and they threw in Advanced Sensi PH perfect A & B as a bonus.. nice guy he was

he's always giving me a deal on stuff, and handing me samples.
So anyway, go with the white, and do yourself a favor and spend a couple extra on the stuff for bathrooms or kids rooms,, it will take a better scrubbing than ordinary paint. i'm looking into this new platinum white they say is about 95% reflective.
So i can offer this advise, take time and think about: Water,Food,Light,Heat,Moisture,ventilation. and ask questions, the only stupid questions are the ones we don't ask.
Happy growing
:smokebuds: