Razer Huntsman colour scheme

The best solution I found was to use OpenRGB instead.

I have a Huntsman v2 Optical and here are the steps I used to make it switch to a "Quick Effects" profile between reboots/shutdowns and then back to "Chroma" when back in Windows:

In OpenRGB under Devices tab select your keyboard and create 2 profiles:

First profile:
Set "Mode: Direct" go ahead and customize exactly how you would in Chroma Studio. i.e. individual keys can be different colors (similar to Advanced Effects profile in Synapse). Save Profile as "Advanced".
Notes:
  - https://www.colorhexa.com or similar will help to really dial in colors.
  - My media keys had slightly different saturation to other keys.

Second profile:
Set "Mode: Static/Spectrum Cycle/Breathing/Wave" this is similar to Quick Effects in Synapse. You can only choose one color or spectrum cycle. Save Profile as "Basic"

Lastly under the Settings tab configure:
  - Load Profile: Advanced
  - Set Profile on Suspend: Advanced
  - Set Profile on Resume: Advanced
  - Set Profile on Exit: Basic

The Basic profile will be saved to the keyboard but beware, if Synapse is run it will set it back to the default which is Spectrum Cycle.
Now your Basic profile will appear in between reboots.