How to plot conditional colored outlines of barplots according to some variable?

Question

I have the following data

structure(list(date = structure(c(1L, 1L, 2L, 2L, 3L, 3L, 4L, 
4L, 5L, 5L, 6L, 6L, 7L, 7L, 8L, 8L, 9L, 9L, 10L, 10L), .Label = c("2