  When creating digital art, coloring and shading are often time consuming
tasks that follow the same general patterns. A solution to automatically
colorize raw line art would have many practical applications. We propose a
setup utilizing two networks in tandem: a color prediction network based only
on outlines, and a shading network conditioned on both outlines and a color
scheme. We present processing methods to limit information passed in the color
scheme, improving generalization. Finally, we demonstrate natural-looking
results when colorizing outlines from scratch, as well as from a messy,
user-defined color scheme.
