I have this numeric variable 1:5, in my dataset D. 
I want to make a barplot, using the geom\_bar function in ggplot, and change the colors of the bars, så each of the five bars have a different color.

I've tried to use the 
scale\_fill\_manual, 

but that does not seem to work, and I've also tried to use 
fill inside my aes which neither works. 
I seems like the bars continues to be grey, no matter what I try. 

My basic code to make the plot are:

```
ggplot(D, aes(x = I_imp)) +
  scale_x_continuous(breaks = c(1, 2, 3, 4, 5),
                     labels = c("No Importance",
                                "Very Low",
                                "Somewhat Low",
                                "Somewhat High",
                                "Very High")) + geom_bar()

```

I want each of the 5 bars to be in different color. But how??

Thank you!