I want to change the color of one bar in a bar chart, but the bar() option does not seem to help.
Stata/SE 17.0 on Win10
Here is a minimal working example:

cls
clear all
input state date freq
3 1 14
3 2 15
3 3 11
3 4 15
2 1 4
2 2 4
2 3 1
2 4 4
1 1 1
1 2 7
1 3 4
1 4 5
end
graph bar freq, over(date) stack bar(2, color(red)) by(state)