Using colours in Gtk::Entry

Hi,

I am writing a little wrapper over a commandline script.

The input can be something like:

extract audio | upload to www.foobar.com

My question is:

Is there an easy way to make the ‘|’ character red when a user inputs
this, via Gtk::Entry?

And if there is no way to use colours in Gtk::Entry, is there another
way to use a oneline input field?