Text Color Change

Hi Guys,
I am having problem with setting the code to change the text color in the entire movie to what ever the user specify… for examply if the user click yellow button text should be yellow. I used this code but it only works with Movie clips not text:
on (release) {
myText.setRGB(0xFFFF00);
}

where myText is the name of the movie clip…obviousley I can not give same name for all the movie clips… and I want to make usable for text not movie clips.

The SWF file attached if u want to see what I am trying to do. The .fla file is here http://www.aydi.co.uk/Text.fla

Any one have an idea please help?