seamless halloween 2021 pattern, trendy pastel colors as yellow, blue, pink, lila. spiderweb, pumpkin.

halloween holiday illustration backdrop spiderweb pattern design skull pumpkin seamless background graphic wallpaper celebration vector symbol texture web party ghost art color cartoon spider star traditional seasonal fear season autumn abstract paper october decor funny decoration ornament wrapping scary treat happy silhouette pastel trendy 2021 soft yellow pink blue lila