To install it follow these steps:
1- Open Premiere Pro 2018.
2- Open "Effect" Panel from the Window menu
3- Right click on "Presents" Folder and hit "Import Presets..."
4- From opened window Find Pixflow Color Correction and import it,
5- Open Presets folder from arrow on it's left and find "Pixflow Color Correction" folder
6- Drag and drop effects on your clips on the timeline to apply color filter :)
if you have any further questions please visit our help center.