Lp,
I changed mine out several years ago with a tinted gold backing plexiglass. I used dimensions that allowed them to be set in the tracks. I had a plastics shop cut them for me.
I did this both in the galley & the head. I haven't done anything over the hanging locker, as all the cabinet wood matches besides, what would you use to latch em closed? Plexiglass can crack easily when under any stress loads like latching.
Then I put cute little knobs on them. When I leave my boat, I also slightly open all the drawers & cabinets so no moisture or odors start.
CR