Removing Color

Ive got a button with black text that text fades blue on(rollOver) & I also have this script attached to the button.

on(press) {
myColor = new Color(this.servicesTxt);
myColor.setRGB(0x990000);
}
on(release) {
myColor = new Color(this.servicesTxt);
myColor.setRGB(0x000000);
}

Although the .setRGB turns the button text back to black the button text doesnt fade to blue.

How do I remove the .setRGB(0x990000); on(release) ???