Returns the colours gfplot uses, addressed by role rather than by hex
value. Override any role for a session with
options(gfplot.palette = list(primary = "#123456")), which is how the
suite is retuned without editing figures.
See also
get_color() for journal palettes and gfplot_theme() for the
type and grid settings that go with these colours.
Examples
gfplot_colors("primary")
#> primary
#> "#0B4F6C"
gfplot_colors(c("model_curve", "comparator_curve"))
#> model_curve comparator_curve
#> "#0B4F6C" "#2A9D8F"
gfplot_colors("series")
#> primary secondary tertiary quaternary violet neutral_mid
#> "#0B4F6C" "#2A9D8F" "#B84A3A" "#D99A2B" "#6F63B6" "#767676"