Add examples for theme(geom, palette.colour.continuous)

R/theme.R

@@ -319,6 +319,21 @@
 #' # as in the facet_wrap the default strip.position is "top"
 #' p3 + theme(strip.text.x.top = element_text(colour = "white", face = "bold"))
 #' p3 + theme(panel.spacing = unit(1, "lines"))
+#'
+#' # Colours -------------------------------------------------------------------
+#'
+#' p4 <- ggplot(mtcars, aes(wt, mpg)) +
+#'   geom_point() +
+#'   annotate(label = "Text Annotation", x = 5, y = 30, geom = "text")
+#'
+#' # You can use the 'ink' setting to set colour defaults for all layers
+#' p4 + theme(geom = element_geom(ink = "dodgerblue"))
+#' # Alternate colours are derived from the 'accent' and 'paper' settings
+#' p4 + geom_smooth(method = "lm", formula = y ~ x) +
+#'   theme(geom = element_geom(accent = "tomato", paper = "orchid"))
+#' # You can also set default palettes in the theme
+#' p4 + aes(colour = drat) +
+#'   theme(palette.colour.continuous = c("white", "pink", "hotpink"))
 #' }
 theme <- function(...,
                   line,