Brush question

[Rik]

Hi Xperts.

I am creating a brush.

Well, I thought I had done this before and set about creating the two shapes I wanted. Clicked on the Pen tool and created the brush.

I then drew an outlined circle and applied my shape brush to it.

What I wanted to do now was to change the colour.

Can't do it. The shapes just stay as the original colour.

If I apply 'Convert Line to Shapes' then I can change the colour but then the brush is not changeable any more.

Is what I have done correct?