Hey there
yep SweetFX or ReShade
if you go to this thread https://forums.frontier.co.uk/showthread.php?t=121355
Dr Kaii has done a great job on this thread and has kept it up to date which is fantastic!
Scroll down to section 2 of the post and you will see that there is a nice setup for SweetFX that you can copy and paste straight into the settings file. (This is the one that, personally, works best for me)
Alternatively you could look at some of the other settings on this post here: https://forums.frontier.co.uk/showthread.php?t=117345
Just experiment and see what works best for you. there is also a program that Dr Kaii mentions in his video https://www.youtube.com/watch?v=s7PPrN05eSw&feature=youtu.be
that allows you to mess with the settings while the game is running. Skip to 4:41 in the video to get an extreeemly sober guide on how to do this
Hope this helps.