How can I change the colors of bars of a bar plot? (No grouping)

[NightMachinery]

Here is my plot:

display(plot(x=a, Geom.histogram(density=true, position=:dodge), Scale.x_discrete, Theme(
# bar_highlight=RGB(0,0.5,1),
 bar_spacing=3mm)))

I want to color the bars randomly, without affecting the plot otherwise. Sth like colorsame that gets a function index_of_current_element_in_color_group, group_default_color -> modified_color would be nice. This way I can introduce some noise into each color to make them visually more salient.

[Mattriks]

I can't think of a way to do this with Geom.histogram, as you say the color aesthetic is used for grouping. If you calculated your own bins and counts e.g. using StatsBase, then you could use Geom.bar and color.

[Mattriks]

I've started PR #1428 which adds new features to Geom.bar (and hence Geom.histogram). Feedback welcome!

[Mattriks]

PR #1428 has been merged, so can this issue be closed?

[NightMachinery]

@Mattriks I think we should keep it. The alpha noise is a good alternative solution for this, but it’s not as visually appealing as changing the colors themselves.