Background to text in 'fit text to path'

Hi all

I have had such excellent help from you guys, and need a bit more if you can.

I produce wall clocks and find Corel Draw X4 really good for what I want, but still going through a learning curve.   Have a  need for a particular technique which escapes me.

If you look at the picture above you will see the 'fit text to path' following the top curve.  Doing that is so simple but what i would like on some of the clocks because of the background if filled with a photograph is a solid background to the text, i.e. white if a dark photograph or black if a light background with of course the opposite text colour to make the words stand out.

What I am looking for is a way to do the text discussed above with a solid background but on a curve as in my example.   Have spent a bit of time on this, but cant work it out, can anyone help?

If you feel you can and i am sure there is a way, just my lack of knowledge that foils me, I would welcome your help.

Many thanks

Kind regards

Phil Allen