Simple animation text color change.

Hello, I am trying to do a simple Text color change using animations for a button. The color change is only 1 frame in the pressed state, and I have it changing from teal to white. The issue is that there is a brief lerp from teal to white where it transitions into the new color. My goal is to have the color change be instant without a lerp. I thought that having the color change on 0:00 would solve this, but there is still a fade. Am I missing something simple or should I just script it?