abstract
alloy
aluminum
art
background
banner
bar
blank
board
border
construction
copy
design
dirty
format
frame
framework
gray
grunge
hard
industrial
industry
iron
layout
line
material
metal
metallic
old
pad
page
panel
pattern
piece
plate
polish
rust
rusty
screw
shine
silver
space
stainless
steel
surface
tablet
template
texture
textured
wall