In this Adobe Photoshop CC 2017 Tutorial, I will demonstrate 3 creative ways to use the noise Gradients feature in the Gradient Fill Tool Menu. These include: 1. Create colorful backdrops and overlays to blend with 2. Create fun circle or square elements using transparency and style 3. Create Text
I'm uncertain exactly what you are after, but maybe you could do this:
Whaen you make your Noise Gradient, for "Color Model" choose HSB, and set the saturation slider to zero, to make it Grayscale. Then, once you have your gradient drawn, add a Gradient Map layer above it, maybe with a gradien similar to this:
You can see the results in the background behind the dialog box here.