Pereira, Colombia-born artist Velco stipples black-and-white tattoos that are patchwork compositions of dots. A densely inked patch might form a snoozing koala’s ear or human silhouette, while a fading gradient composes the steam emanating from a moka pot. Lighthearted and often evoking the surreal, the works are derived from conversations with clients and the artist’s interactions with the world. “The window frames that I’ve been designing and tattooing have been exactly that, a portal to…