abstract
aged
alloy
aluminium
aluminum
backdrop
background
blank
brushed
closeup
cover
cracked
decorative
design element
detail
dirty
distressed
frame
grainy
grunge
grungy
gum
hard
heavy
highlight
industry
iron
line
metal
metallic
old
panel
pattern
pitch
poster
resin
rough
rust
sheet
spotted
stainless
steel
surface
tar
texture
textured
tile
titanium
vintage
wall