abstract abstract background art backdrop background backgrounds beautiful beauty blue cold color computer concept cool creative curve december decoration delicate design desktop digital drawing effects elegance element energy ethereal flowing form Fractal freshness futuristic glow graphic graphics greeting grunge holiday ice illustration light lights line lines liquid merry modern modern background motion New pastel pattern season shape shine smooth snow snowfall snowflake soft softness space star style swirl swirls tech technology template texture textures trails transparent trendy vector virtual wallpaper water wave web whisp whispy white winter wisp wispy xmas gossamer internet movement net sci fi science fiction scrapbooking shapes smoke smoky pink gray grey