Hello! Amplify Color volumes should work in the same way as if you were using any other camera, VRTK shouldn't be causing any issues.
We'll need more information regarding your setup in order to best help you, a sample would be ideal. You can also use a proxy mesh ( Trigger Volume Proxy ) instead of the camera, in this case you could use the player prefab for position tracking, more information can be found in the
Wiki Manual.