title: How to add a label to a color using aes in R
body: <p>I have a simple ggplot command in my script file:</p>
  
  <pre><code>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")
  </code></pre>
  
  <p>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.</p>