An example better sharpen in Resolve

So here I am coloring the feature Uninvited Guest for Director Brian Ruppert.
The footage is shot in 5D, which is originally 1440*1080 you know.
Now what we are going to do is to sharpen it. 
Here is the original picture.

Question is if we just sharpen all the picture, then comes the result that the red/ green noise will sharpen and pops out.

So here is the way: we can separate the luminance and chroma into two different layers and just sharpen the luminance node.
Use layer nodes, 1st take out the luminance, 2nd take out the saturation. and sharpen the 2nd one, then use Add mode.

Here is the final result and details.