abandoned
abstract
background
blue
broken
brown
corroded
corrosion
corrosive
damage
decay
dirty
grunge
grungy
material
messy
metal
metallic
natural
neglect
object
obsolete
old
old texture
oxidation
paint
peeling
pollution
rotting
ruined
rust
rusted
rusting
rusty
rusty metal
surface
texture
wall
wreckage