  Vector graphics are an industry-standard way to represent and share visual
designs. Designers frequently source and incorporate styles from existing
designs into their own work. Unfortunately, popular design tools aren't well
suited for this task. We present VST, Vector Style Transfer, a novel design
tool for flexibly transferring visual styles between vector graphics. The core
of VST lies in leveraging automation while respecting designers' tastes and the
subjectivity inherent to style transfer. In VST, designers tune a cross-design
element correspondence and customize which style attributes to change. We
report results from a user study in which designers used VST to control style
transfer between several designs, including designs participants created with
external tools beforehand. VST shows that enabling design correspondence tuning
and customization is one way to support interactive, flexible style transfer.
We also find that someone using VST can significantly reduce the time and work
for style transfer compared to experienced designers using industry-standard
tools.
