title: GGPLOT Color won't work
body: <p>It must be very simple. I just want to set the color for a scatter plot.</p>
  
  <pre><code> library(ggplot2)
   df3=data.frame(cbind("A", 5, 3))
   ggplot(data = df3) + geom_point(aes(x = X2, y = X3, colour = "black"))
  </code></pre>
  
  <p>Why is it pink and not black?
  I've tried with hex code as well.</p>
  
  <p><a href="http://i.stack.imgur.com/Kr8NO.png" rel="nofollow">image</a></p>