title: Can't find an option to set a view colour using RGB or hex in XCode 4.2
body: <p>In XCode 4.2, I want to set a view's background colour to a particular RGB value.  However, I don't appear to have the "RGB Sliders" option that I used to have (perhaps in a previous version).  I'm looking for something like the dialog shown in <a href="https://stackoverflow.com/a/2565029/5171">this answer</a> to another question, but all I've got is this:</p>
  
  <p><img src="https://i.stack.imgur.com/gz6D8.png" alt="XCode 4.2 colour chooser"></p>
  
  <p>There are no other options in the drop-down that says "Spectrum".  Does anyone know if/how I can get XCode to accept RGB or hex values?</p>