Hasta La Motion!

Im gonna start with showing what I’ve achieved succesfully so far and then I’ll explain my problem.

http://www.youtube.com/watch?v=Q4OieoF8n_A

As you can see I’ve made a rotoshape that covers the DJ and I’ve put scrolling text in it.

This I have done the following way. http://users.telenet.be/sickbrain/Afbeelding%202.png

Voorbereiding2_57 is the footage, groep 2 the rotoshape and SFileIn1 a psd with the text that makes a left to right move.

So far so good.

However, the next shot I have 2 DJ’s at the same time. I’ve rotoshaped them both and put the 2 shapes in 2 different groups. I now want to put some yellow on blue text in one DJ and some blue on yellow text in the other DJ. They both are in the same shot and at some point they overlap so at some moment there is a forgroundDJ and a backgroundDJ.
I’ve uploaded a screenshot of how I’ve laid it out for now

http://users.telenet.be/sickbrain/Afbeelding%204.png

Anyone who could provide me with some insight as I’m quite new to Shake. If you need more info just ask and I’ll try to explain what I want to achieve a bit better.

Tnx in advance,

Andries