abstract
aged
alloy
aluminum
art
background
brown
brushed
copper
damaged
dark
design
detail
dirty
frame
gray
grunge
grungy
hard
heavy
industrial
industry
iron
material
metal
metallic
old
pattern
plate
red
reflection
rough
rust
rustic
rusty
scratch
scratched
sheet
shiny
silver
stain
stainless
steel
surface
template
texture
textured
wall
wallpaper
weathered