Just had a play with it and it seems I did not provide enough information.  The title editor works perfectly well when editing a 2D movie.  The problem rears its head when trying to add a title to a 3D movie.  The red slider has no effect on the colour of the title (though does in the colour sample box.  The amount of red in the colour of the text is varied by the green slider along with the amount of green.

I tried creating a title in a scrap piece of 2D movie and then cutting and pasting it to my 3D movie.  No joy.  The red is automatically adjusted to match the green.