st: Bar colors in graph

[Richard Ohrvall <richard.ohrvall@gmail.com>]

Dear Statalist,

I am creating some bar graphs where I would like fill some bars with a
different color based on the values for some other variable (or in
some cases the variable I use to create the groups). Eg. if I create
the following graph

sysuse auto, clear
graph hbar (mean) price, over(rep78, sort(price) descending)

I would like the bars to be blue except where rep78==3 in which case I
would like them to be yellow. I assume there is some way to do this in
some way, but I haven't found it. I could do it manually in the graph
editor, but that is not a viable solution in  this case.

Any help would be greatly appreciated.

All the best,
Richard
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