I want the white to be pure, but I think I'm turning the gold foil too much into yellow in the process of changing the brightness / saturation.

Here's the original:

[![enter image description here](https://i.stack.imgur.com/qYU8O.jpg)](https://i.stack.imgur.com/qYU8O.jpg)

and what I have currently:

[![enter image description here](https://i.stack.imgur.com/yPHop.jpg)](https://i.stack.imgur.com/yPHop.jpg)

As you can see, a lot of the gold foil turns into a yellowish color. The white part looks a lot cleaner though so I am satisfied with that. How would I adjust just the gold / yellow?

An example of the tone that I want is this:

[![enter image description here](https://i.stack.imgur.com/p44U6.jpg)](https://i.stack.imgur.com/p44U6.jpg)