Are you looking to that isn't loading correctly in your current installation?
To fix a pale gradient, undo and select pure black ; the tool gradients from the selected color to white/transparent. Nga studio ex4 fix materials
For a comparison between the modern version of this software and free alternatives, watch this video: Are you looking to that isn't loading correctly
In modern versions, you can reset additional materials via the Maintenance Menu in the Clip Studio settings. undo and select pure black