background board box card. card board cardboard carton grunge grungy grungy background paper ripple ripples scrap scrapbook vintage card print pulp texture abstract art aged book historical old worn blue screen of death computer error error screen graphic card hard drive key board monitor mother board system is busy backdrop blend card board fill large layer lines autumn circuit card detritus digital green leaves october printed circuit board psychedelic September trees colors colour colours hue hues papier series shade shades tone tones