of colorful, magical mountains, with a rainbow aurora in the sky, a river winding through the valley.

sky river valley fantasy background dark design illustration blue light pattern wallpaper colorful holiday white abstract backdrop business color concept digital earth future futuristic global globe graphic line modern network planet science space style technology texture web art barber bone bones celebration cranium culture day dead death decoration element festival floral flower gothic halloween head heart horror human icon logo mask mexico mustache ornament retro scary sign skeleton sketch skull spooky sugar tattoo traditional vector adventure beautiful christmas ai generated