ropensci/plotly — pull request #137 by pedrodz (2014-10-28 23:01:27+00:00)
Title: ggplot: geom_area and geom_ribbon: fill and line colors

Summary:
- Default fill color for `geom_area` and `geom_ribbon`: `gray20`
- Default line color for `geom_area` and `geom_ribbon`: `NA` (equivalent in Plotly to `width=0`)