I have a simple ggplot command in my script file:

```
ggplot(myea_running, aes(x=DistanceMeters, y=AvgPace, 
   color=month(myea_running$StartTime))) + 
geom_point(aes(size = TotalTimeSeconds)) + 
geom_smooth() + 
ggtitle("Distance (m) over average pace (min / km)") + 
labs(x="Distance", y="Average pace")

```

and I would like to change the default color title that the above code generates. I looked through the documentation but did not find any relevant information on putting a title on a color code generated using the color attribute of the aes() function.