maybe this helps some people:-
there is a *.veg file on the net that you can download and open in vegas.
If you go to “track effects” and “sony color curves” you’ll see an s curve to correct technicolor cinestyle already loaded. (there’s n footage in this file but the preset is set for the video track)
Just save it as a preset in vegas and then you have the curve for all time!
The link is
cinestyle preset vegas file
I don’t use this style because it makes skin too orange. I may not really understand it.