Why is ggplot using default colors when others are specified?

Question

I am trying to have ggplot2 show one line of a histogram as a different color than the rest. In this I have been successful; however, ggplot is using the default colors whe

Answer 1

I don't think you can explicitly set colors in aes; you need to do it in scale_fill_manual, as in the example below:

ggplot(dist.x, aes(x = sim_con)) +
  geom_histogram(colour = "black", binwidth = .01,aes(fill=(sim_con==1.55))) + 
  scale_fill_manual(values=c('TRUE'='darkgreen','FALSE'='firebrick')) +
  theme(legend.position="none")