I've never used Shadow Tech gaming, and there's not a lot of documentation on the company site. But it does list the default configuration as using an Nvidia GeForce GTX 1080 or Quadro P5000. So depending on how much control you have locally on your computer, you might be able to enable certain Nvidia Freestyle filters to change the brightness, contrast, etc. (This is just speculation on my part.)
Do you have any GeForce Experience settings or interface available? Are there any other Nvidia-related settings within the app? If you're not sure what you're looking at, please post a couple of screenshots.
