Meanwhile, the boy twists and turns on his surfboard as he rides the “waves.” Complementing the piece is a mural on one of the gallery walls. The scene consists of four vinyl silhouettes ...

Sandra Vásquez de la Horra’s piece Playgirls Don’t Play Longer (2010), which found a buyer, also made waves. “She draws the figures first in charcoal and then dips the entire sheet in wax.

Sometimes, though, you might just want to do some freehand pen-and-ink drawing using such "captured colors." That's just what Scribble's upcoming Ink color picker pen is designed to let you do.