I used to resize face to change the hole diameter, but when I need to change the color of the holes have changed, I do not know how to quickly
During feature recognition (Find Features) you can turn on "Assign Color Attribute" option. It will automatically apply separate colors to different hole sizes and types.
And as you will have features recognized - it will help you to create drilling operations faster in your case.
Production: NX 12.0.1Development: C#, Tcl/Tk, CSE