抽象主義
abstract
angular
background
black
border
business
bw
circle
circular
colorless
complex
compound
concentric
contour
design
digital
element
frame
futuristic
geometric
geometry
graphic
grayscale
greyscale
high
hightech
hitech
illustration
isolated
line
lines
minimal
misc
miscellaneous
modern
monochrome
monocrome
opart
optical
pattern
segmented
shape
simple
tech
techno
technology
white