Ok, I see. That should work, as long as the original color of the type is black. You are adding a percentage of white to each of the RGB channels to the existing color. If the original color is something else, the target color gets added to the original color, resulting in something else.
If you want to use colored lettering to start with, you’ll need two color animators with expression selector. The first color expression would add 100% black to any letters that you want to subsequently color. The second would be the same you currently have.
Kalleheikki Kannisto
Senior Graphic Designer