My hair is naturally a light auburn, but as I have gotten older, it has gotten much darker. Used Nice and Easy to color it, make it lighter I hoped, but it came out a dull red instead. After much deliberation and research, I used Color Zap to take it out. Worked great. Here is my question. I LOVE the color of my hair as it is after using the Color Zap. I know you are supposed to color it again after removing the wrong color, but what if I don't? Is some disaster going to befall me and my hair?

No. If you like the color the way it is, just leave it alone. :)