Flamer's armor, weak-spot gastank, and gastank armor more vibrant for visibility.
Eg: Once you knock a single plate (of total 6) off his gastank, it is vulnerable to being shot and exploded in it's exposed areas. Pitch black baked-shadow gastanks aren't too great for visibility...

Best suited for use with RAID WW2: Flamer Bugefix, which makes Flamers actually function as intended, serious Flamers are seriously broken without it (their backpacks can't be blown up most of the time, broken online syncing etc...)
Also check out Raid World War 2: Das Neue Alter von Überfälle Rebalance