Different font_size for each pane via right clicking or other.

It would be nice to have different font sizes for each code pane.  For example I have 2 code panes.  One that holds my current migration and the other which generally is the controller, the model or a seed.  It would be nice if we could shrink the text of the second pane so that it doesn't take up so much real estate since it's mostly there to reference.